cannon

noun

• 1 (plural usually same) a large, heavy piece of artillery, typically mounted on wheels, formerly used in warfare: they would cross at the Town ford, under cover of the defending cannon
• a heavy automatic gun that fires shells from an aircraft or tank: the gunships blasted arms depots with 105 mm cannon fire and rockets

• 2 Billiards & Snooker, chiefly British a stroke in which the cue ball strikes two balls successively.

  [ early 19th century: alteration of carom]

• 3 Engineering a heavy cylinder or hollow drum that is able to rotate independently on a shaft.

verb

• 1collide with something forcefully or at an angle:the couple behind almost cannoned into us his shot cannoned off the crossbar

• 2 Billiards & Snooker make a cannon shot.