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cannon

[kan-uh n] /ˈkæn ən/
noun, plural cannons (especially collectively) cannon.
1.
a mounted gun for firing heavy projectiles; a gun, howitzer, or mortar.
2.
British Machinery, quill (def 10).
3.
Armor. a cylindrical or semicylindrical piece of plate armor for the upper arm or forearm; a vambrace or rerebrace.
4.
Also called cannon bit, canon bit. a round bit for a horse.
5.
the part of a bit that is in the horse's mouth.
6.
(on a bell) the metal loop by which a bell is hung.
7.
Zoology.
  1. cannon bone.
  2. the part of the leg in which the cannon bone is situated.
8.
British. a carom in billiards.
9.
Underworld Slang. a pickpocket.
verb (used without object)
10.
to discharge cannon.
11.
British. to make a carom in billiards.
Origin
late Middle English
1375-1425
1375-1425 (earlier in Anglo-Latin, AF); late Middle English canon < Middle French < Italian cannone, equivalent to cann(a) tube (< Latin; see cane) + -one augmentative suffix
Can be confused
cannon, canon.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for canon bit

cannon

/ˈkænən/
noun (pl) -nons, -non
1.
an automatic aircraft gun of large calibre
2.
(history) a heavy artillery piece consisting of a metal tube mounted on a carriage
3.
a heavy tube or drum, esp one that can rotate freely on the shaft by which it is supported
4.
the metal loop at the top of a bell, from which it is suspended
5.
6.
(billiards)
  1. a shot in which the cue ball is caused to contact one object ball after another
  2. the points scored by this Usual US and Canadian word carom
7.
a rebound or bouncing back, as of a ball off a wall
8.
either of the two parts of a vambrace
verb
9.
(intransitive) often foll by into. to collide (with)
10.
short for cannonade
11.
(intransitive) (billiards) to make a cannon
Word Origin
C16: from Old French canon, from Italian cannone cannon, large tube, from canna tube, cane1
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 canon bit

cannon

n.

c.1400, "tube for projectiles," from Anglo-French canon, Old French canon (14c.), from Italian cannone "large tube, barrel," augmentative of Latin canna "reed, tube" (see cane (n.)). Meaning "large ordnance piece," the main modern sense, is from 1520s. Spelling not differentiated from canon till c.1800. Cannon fodder (1891) translates German kanonenfutter (cf. Shakespeare's food for powder in "I Hen. IV").

Online Etymology Dictionary, © 2010 Douglas Harper
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canon bit in Science
Cannon
  (kān'ən)   
American astronomer noted for her work on classifying stellar spectra. Cannon classified the spectra of 225,300 stars brighter than magnitude 8.5, as well as 130,000 fainter stars.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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