chock

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A block or wedge placed under something else, such as a wheel, to keep it from moving.
• noun Nautical A heavy fitting of metal or wood with two jaws curving inward, through which a rope or cable may be run.
• transitive verb To fit with or secure by a chock.
• transitive verb Nautical To place (a boat) on chocks.
• adverb As close as possible.

from The Century Dictionary.

• A variant of choke.
• Entirely; fully; as far as possible: used in the nautical phrases chock aft, chock home, etc.
• An obsolete variant of shock.
• To throw with a quick motion; toss; pitch: same as chuck, 2.
• To check the motion of, as by a chock.
• noun 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.—
• noun In ship-building, a block of approximately triangular shape, used to unite the head and heel of consecutive timbers.—
• noun 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.—
• noun 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.
• Nautical, to secure by putting a chock into or under: as, to chock the timbers of a ship; to chock a cask.
• To fill up a cavity like a chock.
• noun A block of wood, especially one for burning. See chuck, 1.
• noun A thick unsawed block of wood. See chock and log.
• noun plural Blocks of wood or stone placed on a harrow, roller, or other machine to give it weight or steadiness.
• noun In turnery, same as chuck, 5.
• noun A rut-like hole in a road.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To fill up, as a cavity.
• transitive verb To stop or fasten, as with a wedge, or block; to scotch.
• adverb (Naut.) Entirely; quite.
• noun 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.
• noun (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.
• transitive verb obsolete To encounter.
• noun obsolete An encounter.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun obsolete An encounter.
• noun Any wooden block used as a wedge or filler
• noun 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.
• noun Blocks made of either wood, plastic or metal, used to keep a parked aircraft in position.
• verb To stop or fasten, as with a wedge, or block; to scotch.
• verb nautical To insert a line in a chock.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb support on chocks
• adverb as completely as possible
• noun a block of wood used to prevent the sliding or rolling of a heavy object
• verb secure with chocks