chock

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A block or wedge placed under something else, such as a wheel, to keep it from moving.
2. n. Nautical A heavy fitting of metal or wood with two jaws curving inward, through which a rope or cable may be run.
3. v. To fit with or secure by a chock: The plane's wheels were chocked and chained down.
4. v. Nautical To place (a boat) on chocks.
5. adv. As close as possible: had to stand chock up against the railing.

Century Dictionary and Cyclopedia

1. A variant of choke.
2. Entirely; fully; as far as possible: used in the nautical phrases chock aft, chock home, etc.
3. An obsolete variant of shock.
4. To throw with a quick motion; toss; pitch: same as chuck, 2.
5. n. A block or piece of wood or other material, more or less wedge-shaped when specially prepared, used to prevent movement, as by insertion behind the props of a ship's cradle, under the sides of a boat on deck, under the wheels of a carriage, etc.—
6. n. In ship-building, a block of approximately triangular shape, used to unite the head and heel of consecutive timbers.—
7. n. Nautical, a block having hornshaped projections extending partly over a recess in the middle, in which a cable or hawser is placed while being hauled in or on: called distinctively a warping-chock.—
8. n. In coal-mining, a pillar built of short square blocks of wood from 2½ to 6 feet long, laid crosswise, two and two, so as to form a strong support for the roof: used especially in long-wall working. This kind of support has the advantage of being easily knocked apart for removal. Also called nog, cog, and clog-pack.—
9. Nautical, to secure by putting a chock into or under: as, to chock the timbers of a ship; to chock a cask.
10. To fill up a cavity like a chock.
11. n. A block of wood, especially one for burning. See chuck, 1.
12. n. A thick unsawed block of wood. See chock and log.
13. n. plural Blocks of wood or stone placed on a harrow, roller, or other machine to give it weight or steadiness.
14. n. In turnery, same as chuck, 5.
15. n. A rut-like hole in a road.
16. To check the motion of, as by a chock.

Wiktionary

1. n. Any wooden block used as a wedge or filler
2. n. nautical Any fitting or fixture used to restrict movement, especially movement of a line; traditionally was a fixture near a bulwark with two horns pointing towards each other, with a gap between where the line can be inserted.
3. n. Blocks made of either wood, plastic or metal, used to keep a parked aircraft in position.
4. v. To stop or fasten, as with a wedge, or block; to scotch.
5. v. nautical To insert a line in a chock.
6. n. obsolete An encounter.

GNU Webster's 1913

1. v. To stop or fasten, as with a wedge, or block; to scotch.
2. v. To fill up, as a cavity.
3. n. A wedge, or block made to fit in any space which it is desired to fill, esp. something to steady a cask or other body, or prevent it from moving, by fitting into the space around or beneath it.
4. n. (Naut.) A heavy casting of metal, usually fixed near the gunwale. It has two short horn-shaped arms curving inward, between which ropes or hawsers may pass for towing, mooring, etc.
5. adv. (Naut.) Entirely; quite.
6. v. obsolete To encounter.
7. n. obsolete An encounter.

WordNet 3.0

1. v. support on chocks
2. adv. as completely as possible
3. n. a block of wood used to prevent the sliding or rolling of a heavy object
4. v. secure with chocks