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1. a heavy tube or drum, esp one that can rotate freely on the shaft by which it is supported
2. the metal loop at the top of a bell, from which it is suspended
3. See cannon bone
4. Billiards a shot in which the cue ball is caused to contact one object ball after another



an artillery gun with a flat trajectory, designed primarily to fire at uncovered vertical targets as well as targets located at great distances. Cannon are included in troop artillery, which is called field artillery in foreign armies.

Unlike a howitzer of the same caliber, the cannon has a longer barrel (from 30 to 70 calibers and more), greater gun weight, and greater muzzle velocity of the shell. Cannon appeared in Rus’ and Western Europe in the 14th century. At that time and later, the term “cannon” meant any gun—for example, the tsar-cannon cast by the Russian master A. Chokhov in 1586 was a mortar. With the application of iron casting in the 16th century, the term came to be used for guns with barrel lengths of from 16 to 22 calibers. Cannon later became the most common guns in all armies.

In World War I the Russian Army in 1915 had 76-mm field and mountain cannon and 107-mm, 152-mm, and 76-mm antiaircraft cannon. At the same time the French Army had 65-mm, 75-mm, and 120-mm cannon, and the German Army had 77-mm and 105-mm cannon. In World War II the Soviet Army had 76-mm, 85-mm, 100-mm, and 122-mm self-propelled cannon; 76-mm regimental and division cannon; 107-mm, 122-mm, 152-mm, and 210-mm conventional cannon; 45-mm, 57-mm, and 100-mm antitank cannon; 37-mm, 76-mm, and 85-mm antiaircraft cannon; 20-mm, 23-mm, and 37-mm aircraft cannon; 100-mm, 130-mm, 180-mm, and 305-mm shore cannon; and 76-mm, 100-mm, and 180-mm ship cannon.

The 1944-model 100-mm cannon was considered one of the best used by the Soviet Army. It had a weight of 3,650 kg, a shell weight of approximately 16 kg, a muzzle velocity of about 900 m/sec, a firing range of 21,000 m, and a maximum rate of fire of seven rounds per minute.

The most common cannon in the US Army was the 155-mm cannon. The 127-mm and 152-mm cannon were the guns most used in the British Army, and in the fascist German, French, and Japanese armies the 75-mm, 105-mm, and 150-mm guns were most commonly used.

Present-day armies have cannon of various caliber in the artillery of ground forces and on the combat vehicles of motorized rifle (motorized infantry or infantry) troops, tanks, airplanes, helicopters, ships, and shore units. Many present-day cannon used by ground forces are self-propelled (capable of moving under their own power during battle and on the march) or propelled by auxiliary means but able to move independently in the area of the fire position. Some ship cannon are general-purpose guns capable of firing at sea, shore, or aerial targets.



A complete assembly which consists of a tube and a breech mechanism with a firing mechanism or base cap and which is a component of a gun, howitzer, or mortar; may include muzzle appendages; the term is generally limited to calibers greater than 1 inch (2.5 centimeters).


A rapid firing gun using shells of 20-mm caliber or higher.
References in periodicals archive ?
Spokesman Dermot Harrigan said: "There is no collection of cannons like this anywhere in Europe.
One of the rows of now-silent cannons marks where Jackson earned his nickname - simply by waiting there impassively for what he judged was the proper moment to enter the fight.
And in the plan for the ministry of tourismEoee1/4eaos Forts and Castles Development Project, it was Al Hazm that was the inspired choice to house a cannon museum.
In Sharjah, 10 cannons are being set up in Al Qaraen, Midan Al Hisn, Al Tala'a area, Buheirah Corniche and Al Hera area.
Picatti had sold one of the automatic cannons to undercover agents for $12,000 in February and was negotiating a deal to sell them four more when he was arrested, Torres said.
The cannons are loud, and we tone it down a little,'' said Paul DeNubilo, Thousand Oaks resident and color sergeant for the Richmond Howitzers, a Confederate artillery unit.
Summary: Cannons will be positioned in five areas across Dubai and will fire to announce iftar time
It is the first delivery of 515 new 40mm cannons that have been ordered for the British Army for use in the Ajax and Warrior vehicles and incorporates unique technologies that will provide superior firepower.
Cannons being readied to signal beginning of the holy month.
Home Secretary Theresa May shot back: "The police have to put a case forward for water cannons.
Salalah: Excavation works at the Al Baleed Archaeological City in Dhofar governorate has unearthed evidence of gun-powder-based weapons used on hand held steel cannons that date back to 1550-1650 AD.
This piece of metal, if archaeologists' guesses are correct, is one of a pair of 19th-century cannons, and not just any pair of 19th-century cannons but the very cannons that gave the nearby stretch of shoreline - Cannon Beach - its name; cannons unveiled only by a series of monster storms in one of the harshest winters the Oregon Coast has seen in recent memory; cannons nobody thought they'd ever see again.