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[chok] /tʃɒk/
a wedge or block of wood, metal, or the like, for filling in a space, holding an object steady, etc.
  1. any of various heavy metal fittings on a deck or wharf that serve as fairleads for cables or chains.
  2. a shaped support or cradle for a ship's boat, barrel, etc.
  3. a small wooden piece or timber for filling a gap, reinforcing an angle, etc., in a wooden vessel.
Metalworking. a bearing supporting the end of a rolling mill.
Mining. a roof support made of cribbing filled with stones.
Compare cog3 (def 2).
verb (used with object)
to furnish with or secure by a chock or chocks.
Nautical. to place (a boat) upon chocks.
as close or tight as possible:
chock against the edge.
Origin of chock
Middle English < Anglo-French choque (compare modern Picard choke big log, Normandy dial. chouque), Old French çoche (French soche); of uncertain origin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for chock
Contemporary Examples
Historical Examples
  • Also, there are four letter files and a large cabinet—all chock full of correspondence from authors and fans.

    The Fantasy Fan December 1933 Charles D. Hornig
  • I guess the palace will be chock full, Button-Bright; don't you think so?

    The Road to Oz L. Frank Baum
  • I filled him chock full, you bet; and mebbe we shan't see 'em again, though it's likely we shall.

    The Young Trail Hunters Samuel Woodworth Cozzens
  • It was chock full, and Jim and I have to sleep under the table.

    Parkhurst Boys Talbot Baines Reed
  • Says the bins have got to be chock full of grain before January first, no matter what happens to us.

    Calumet 'K' Samuel Merwin
British Dictionary definitions for chock


a block or wedge of wood used to prevent the sliding or rolling of a heavy object
  1. a fairlead consisting of a ringlike device with an opening at the top through which a rope is placed
  2. a cradle-like support for a boat, barrel, etc
(mountaineering) See nut (sense 10)
verb (transitive)
(usually foll by up) (Brit) to cram full: chocked up with newspapers
to fit with or secure by a chock
to support (a boat, barrel, etc) on chocks
as closely or tightly as possible: chock against the wall
Word Origin
C17: of uncertain origin; perhaps related to Old French çoche log; compare Provençal soca tree stump
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for chock

1670s, "lumpy piece of wood," possibly from Old North French choque "a block" (Old French çoche "log," 12c.; Modern French souche "stump, stock, block"), from Gaulish *tsukka "a tree trunk, stump."


"tightly, close up against," 1799, back formation from chock-full.

Online Etymology Dictionary, © 2010 Douglas Harper
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