Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. A utensil with two or more prongs, used for eating or serving food.
- n. An implement with two or more prongs used for raising, carrying, piercing, or digging.
- n. A bifurcation or separation into two or more branches or parts.
- n. The point at which such a bifurcation or separation occurs: a fork in a road.
- n. One of the branches of such a bifurcation or separation: the right fork. See Synonyms at branch.
- n. Games An attack by one chess piece on two pieces at the same time.
- v. To raise, carry, pitch, or pierce with a fork.
- v. To give the shape of a fork to (one's fingers, for example).
- v. Games To launch an attack on (two chess pieces).
- v. Informal To pay. Used with over, out, or up: forked over $80 for front-row seats; forked up the money owed.
- v. To divide into two or more branches: The river forks here.
- v. To use a fork, as in working.
- v. To turn at or travel along a fork.
Century Dictionary and Cyclopedia
- n. An instrument or tool consisting of a handle with a shank, usually of metal, terminating in two or more prongs or tines. Specifically— Such an instrument, of small size, used at table to hold food while it is being cut with the knife, and to lift food to the mouth.
- n. One of various agricultural tools with the prongs of which loose substances are gathered and lifted, as a hay-fork or dung-fork. See pitchfork.
- n. Something resembling a fork in form A tuning-fork.
- n. One of the parts into which anything is divided by bifurcation; a forking branch or division; a prong or shoot: as, the forks of a road or stream; Clark's fork of Columbia river; a fork of lightning.
- n. The point or barb of an arrow.
- n. The bifurcated part of the human frame; the legs.
- n. A gibbet; in the plural, the gallows. See furca.
- n. In mining, the bottom of the sump.
- To raise or pitch with a fork, as hay.
- To dig and break with a fork, as ground.
- In mining, to pump or otherwise clear out (water) from a shaft or mine. Forking the water is drawing it all out; and when it is done the mine or the water is said to be forked, and the engine to be in fork. Pryce.
- To become bifurcated or forked; send out diverging parts like the tines of a fork.
- In mining, to draw out water from a shaft.
- n. In mech.: A pair of teeth or pins standing out from a bar and inclosing a space within which runs the belt of a machine fitted with fast and loose pulleys. By moving the bar which carries the pins endwise the belt can be shifted.
- n. A piece of steel fitting into the socket or chuck on a lathe, used for driving the piece to be turned.
- n. A position, in a game of chess, where two pieces are attacked at the same time by a pawn.
- In chess, to attack (two hostile pieces) with a pawn.
Wiktionary
- n. A pronged tool having a long straight handle, used for digging, lifting, throwing etc.
- n. A gallows.
- n. A utensil with spikes used to put solid food into the mouth, or to hold food down while cutting.
- n. A tuning fork.
- n. An intersection in a road or path where one road is split into two.
- n. A point where a waterway, such as a river, splits and goes two (or more) different directions.
- n. A point in time where one has to make a decision between two life paths.
- n. The simultaneous attack of two adversary pieces with one single attacking piece (especially a knight).
- n. A splitting-up of an existing process into itself and a child process executing parts of the same program.
- n. An event where development of some free software or open-source software is split into two or more separate projects.
- n. Crotch.
- n. A forklift.
- n. The individual blades of a forklift.
- n. In a bicycle, the portion holding the front wheel, allowing the rider to steer and balance.
- v. To use a fork to move food to the mouth.
- v. To spawn a new child process in some sense duplicating the existing process.
- v. To split a (software) project into several projects.
- v. To kick someone in the crotch.
GNU Webster's 1913
- n. An instrument consisting of a handle with a shank terminating in two or more prongs or tines, which are usually of metal, parallel and slightly curved; -- used for piercing, holding, taking up, or pitching anything.
- n. Anything furcate or like a fork in shape, or furcate at the extremity.
- n. One of the parts into which anything is furcated or divided; a prong; a branch of a stream, a road, etc.; a barbed point, as of an arrow.
- n. The place where a division or a union occurs; the angle or opening between two branches or limbs.
- n. The gibbet.
- v. To shoot into blades, as corn.
- v. To divide into two or more branches.
- v. To raise, or pitch with a fork, as hay; to dig or turn over with a fork, as the soil.
WordNet 3.0
- n. an agricultural tool used for lifting or digging; has a handle and metal prongs
- v. place under attack with one's own pieces, of two enemy pieces
- v. divide into two or more branches so as to form a fork
- v. shape like a fork
- v. lift with a pitchfork
- n. cutlery used for serving and eating food
- n. the region of the angle formed by the junction of two branches
- n. the angle formed by the inner sides of the legs where they join the human trunk
- n. the act of branching out or dividing into branches
Etymologies
- Middle English forke, digging fork, from Old English forca and from Old North French forque, both from Latin furca.
Examples
“I had nothing against his name, but this one was mine, and it stood for me, as firmly as the word fork stood for the thing I was holding in my hand.”
“Clearly you haven't the faintest idea when it comes to open source software development, even your understanding of the term fork is fundamentally flawed.”
“The only places worth fishing around Missoula are Rock Creek and the main fork of the Bitterroot!!!”
“The fork is also important, as it affects pedaling out of corners, which is relevant to our sprinting.”
High Road, Specialized partnership unites a pair of industry titans
“Also there's no hinge (like with the versapod) the fork is made of flexible rubber which makes it very steady for shooting.”
““A fork is the only utensil that may be used to eat spaghetti while anyone is looking.””
“The cannibal eating with an Energy Star fork is still a cannibal.”
“The fork is modern even in the East and the Moors borrow their term for it from fourchette.”
“If the fork is shorter, you burn your fingers easily; if it is longer, you lose some control and coordination.”
“The fork is without retention tabs and comes with a competition quick release front skewer for fast roll changes.”
Lists
These user-created lists contain the word ‘fork’.
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Olde Englisc
English words of Anglo-Saxon origin.
onslaught, slain, clove, clave, thrice, nincompoop, scorn, storm, scant, lurk, beneath, atop and 143 more...
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Undo
A list of terms that denote separating one thing from another, or deconstructing a thing into its parts or to a former state. E.g., untie, divorce, unscramble.
untie, divorce, unscramble, disunite, disjoin, undo, separate, disassemble, uncouple, unhitch, disassociate, disaffiliate and 178 more...
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CycList
Anything related to cycling; no motorcycling, please.
frame, pedal, crank arm, top tube, down tube, seat tube, seat stay, chain stay, saddle, fork, hub, rim and 97 more...
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Weird Words
Words that sound strange
flesh, moist, supple, ample, flab, tardy, fork, umber, glasses, paper, mellifluous
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Anglo-Norman
English words of Norman-French origin.
wage, wait, war, wicket, warranty, guarantee, guard, warden, guardian, glamour, grammar, catch and 30 more...
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Water always flows downhill
The path of least resistance, watercourses, plumbing....
swale, hollow, creek, crick, depression, holler, draw, ditch, corrie, cwm, continental divide, stream and 66 more...
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kitchen utensils
glass, knife, fork, teapot, oven, spoon, plate, frying pan, saucepan, masher, spatula, strainer and 13 more...

Devon Buchanan Your second Century Dictionary etymology looks to have been cut off:
"(fork, n." (that's it) May 6, 2010
chained_bear Manx word for ear-marks on sheep:
"A perpendicular V-shaped cut in the top of the ear—in Maughold, at any rate. It is made by folding the ear lengthwise and cutting off the point, thus making a wide notch in the tip. 'Fork' is the Cumbrian name for the same mark. A semi-circle punched out of the top of the ear is also called a fork by some men."
—W. Walter Gill, Manx Dialect Words and Phrases, 1934 Apr 23, 2009
seanahan In chess, attacking two pieces at once, typically with a knight. I've also used trork, and quork has never come up. Feb 20, 2007