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cannonball

[kan-uh n-bawl] /ˈkæn ənˌbɔl/
noun, Also, cannon ball
1.
a missile, usually round and made of iron or steel, designed to be fired from a cannon.
2.
Tennis. a served ball that travels with great speed and describes little or no arc in flight.
3.
anything that moves with great speed, as an express train.
adjective
4.
made from a curled-up position with the arms pressing the knees against one's chest:
a cannonball dive.
5.
moving at great speed:
a train known as a cannonball express.
Origin
1655-1665
1655-65; cannon + ball1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for cannon-ball

cannonball

/ˈkænənˌbɔːl/
noun
1.
a projectile fired from a cannon: usually a solid round metal shot
2.
(tennis)
  1. a very fast low serve
  2. (as modifier) a cannonball serve
3.
a jump into water by a person who has his arms tucked into the body to form a ball
verb (intransitive)
4.
often foll by along, etc. to rush along, like a cannonball
5.
to execute a cannonball jump
adjective
6.
very fast or powerful
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 cannon-ball
n.

also cannon ball, 1660s, from cannon (n.) + ball (n.1). As a type of dive, from 1905.

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for cannon-ball

cannonball

noun
  1. A fast express or freight train (1915+ Hoboes)
  2. A message sent from one prisoner to another, or from a prisoner to friends outside (1920+ Prison)

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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8
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