from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To reduce to fragments, shreds, or powder by rubbing against an abrasive surface.
- transitive v. To cause to make a harsh grinding or rasping sound through friction: grated her teeth in anger.
- transitive v. To irritate or annoy persistently.
- transitive v. Archaic To rub or wear away.
- intransitive v. To make a harsh rasping sound by or as if by scraping or grinding.
- intransitive v. To cause irritation or annoyance: a noise that grates on one's nerves.
- n. A harsh rasping sound made by scraping or rubbing: the grate of a key in a lock.
- n. A framework of parallel or latticed bars for blocking an opening.
- n. A framework of metal bars used to hold fuel or food in a stove, furnace, or fireplace.
- n. A fireplace.
- n. A perforated iron plate or screen for sieving and grading crushed ore.
- transitive v. To equip with a grate.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A horizontal metal grille through which water, ash, or small objects can fall, while larger objects cannot.
- v. To shred things, usually foodstuffs, by rubbing across a grater.
- v. To rub against, making a (usually unpleasant) squeaking sound.
- v. To grate on one’s nerves; to irritate or annoy.
from the GNU version of the Collaborative International Dictionary of English
- adj. Serving to gratify; agreeable.
- n. A structure or frame containing parallel or crosed bars, with interstices; a kind of latticework, such as is used ia the windows of prisons and cloisters.
- n. A frame or bed, or kind of basket, of iron bars, for holding fuel while burning.
- transitive v. To furnish with grates; to protect with a grating or crossbars.
- transitive v. To rub roughly or harshly, as one body against another, causing a harsh sound; ; to produce (a harsh sound) by rubbing.
- transitive v. To reduce to small particles by rubbing with anything rough or indented.
- transitive v. To fret; to irritate; to offend.
- intransitive v. To make a harsh sound by friction.
- intransitive v. To produce the effect of rubbing with a hard rough material; to cause wearing, tearing, or bruising. Hence; To produce exasperation, soreness, or grief; to offend by oppression or importunity.
from The Century Dictionary and Cyclopedia
- To rub together or against strongly so as to produce a harsh scraping sound: as, to grate the teeth.
- To reduce to small particles by rubbing or rasping with something rough or indented: as, to grate a nutmeg or the peel of a lemon.
- To affect harshly and painfully, as if by abrasion; fret.
- To produce a harsh or jarring sound of, as by the friction of rough bodies.
- To scratch or scrape with; use for attrition or abrasion.
- To make a harsh or rasping sound by friction or attrition; give out a scraping noise.
- To produce a harsh impression; cause irritation or chafing.
- n. A grater.
- n. A partition made with bars parallel to or crossing one another; a framework of bars in a door, window, hatchway, or other opening.
- n. A frame of metal bars in which fuel is burned, especially coal.
- n. The floor of a fire-box or furnace, formed of a series or group of bars; the bottom of a furnace, on which the fuel rests, and through which it is supplied with air.
- n. In metallurgy: A perforated metal plate used in the stamping of ores, through which the pounded ore passes.
- n. A screen.
- n. An ore-roasting furnace with a grate revolving horizontally.
- To furnish with a grate or grates; fill in with cross-bars: as, to grate a window.
- Pleasant; agreeable.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. make a grating or grinding sound by rubbing together
- n. a harsh rasping sound made by scraping something
- n. a barrier that has parallel or crossed bars blocking a passage but admitting air
- v. gnaw into; make resentful or angry
- v. scratch repeatedly
- n. a frame of iron bars to hold a fire
- v. reduce to small shreds or pulverize by rubbing against a rough or sharp perforated surface
- v. furnish with a grate
Middle English graten, from Old French grater, to scrape, of Germanic origin.
Middle English, from Medieval Latin grāta, alteration of Latin crātis, wickerwork.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French grater ("to scrape") ( > French gratter), from Frankish kratton, Proto-Germanic. Cognate with Old High German krazzon ( > German kratzen ("to scrawl") > Danish kradse ), Icelandic krassa ("to scrawl")  and Danish kratte. (Wiktionary)