cannon

1 of 2

noun

can·​non ˈka-nən 

plural cannons or cannon

1

plural usually cannon

a

: a large, heavy gun usually mounted on a carriage

b

: a heavy-caliber automatic aircraft gun firing explosive shells

c

: any device for propelling a substance or object at high speeds

an air cannon

a T-shirt cannon

see also water cannon

2

or canon : the projecting part of a bell by which it is hung : ear

3

: the part of the leg in which the cannon bone is found

4

sports, informal : a very strong throwing arm

While Hershberger had a quick, accurate arm, Lombardi had a cannon.

—William Nack

a shortstop with a cannon arm

cannon

2 of 2

verb

cannoned; cannoning; cannons

intransitive verb

: to discharge cannon

transitive verb

: cannonade

Did you know?

What is the difference between cannon and canon?

Cannon and canon are occasionally confused by writers, but the two words have independent origins, and do not share a meaning. Cannon is most frequently found used in the sense of "a large gun," and can be traced to the Old Italian word cannone, which means "large tube." Canon, however, comes from the Greek word kanōn, meaning "rule." Although canon has a variety of meanings, it is most often found in the senses of "a rule or law of a church," "an accepted rule," or "a sanctioned or accepted group or body of related works." A loose cannon is "a dangerously uncontrollable person or thing." There are no loose canons.

Examples of cannon in a Sentence

Verb

The ball cannoned off the goalpost and into the net.

Recent Examples on the Web

Noun

Anduril even has a drone design that very much resembles the MQ-9 Reaper that can be launched out of a cannon while carrying warheads up to 33 lb (15 kg). —New Atlas, 12 Oct. 2024

The cannon was marked with a relief of a sailing ship, the name of the Dutch East India Company, and a date, 1604. —Sam Knight, The New Yorker, 4 Nov. 2024

Verb

The last of them came on Saturday, a storybook goal that involved slaloming between three defenders and then cannoning a fierce, rising shot past three more, as well as the goalkeeper. —Rory Smith, New York Times, 14 Mar. 2023

The cost per shot is cheap, as the ammunition is technically just electricity generated on the spot and not a missile or even cannon round built in a factory and shipped to the battlefield. —Kyle Mizokami, Popular Mechanics, 19 Mar. 2020

Word History

Etymology

Noun

Middle English canon, from Anglo-French, from Old Italian cannone, literally, large tube, augmentative of canna reed, tube, from Latin, cane, reed — more at cane

First Known Use

Noun

15th century, in the meaning defined at sense 1a

Verb

1567, in the meaning defined at transitive sense

Phrases Containing cannon

• cannon bone
• cannon fodder
• loose cannon
• water cannon

Kids Definition

cannon

noun

can·​non

ˈkan-ən

plural cannons or cannon

1

: a large heavy gun usually mounted on wheels

2

: an automatic gun of large caliber on an airplane

Medical Definition

cannon

noun

can·​non ˈkan-ən 

: the part of the leg in which the cannon bone is found

Biographical Definition

Cannon

biographical name

Can·​non ˈka-nən 

Joseph Gurney 1836–1926 Uncle Joe American politician