cannon

noun

1
a shot in billiards in which the cue ball contacts one object ball and then the other
2
lower part of the leg extending from the hock to the fetlock in hoofed mammals
3
a large artillery gun that is usually on wheels
4
heavy automatic gun fired from an airplane
5
(Middle Ages) a cylindrical piece of armor plate to protect the arm
6
heavy gun fired from a tank

Also useful for “cannon”:Unscrambler— Rearrange the letters in “cannon”