cav ‧ al ‧ ry /ˈkæv ə lri/ BrE AmE noun [plural, uncountable]
[ Date: 1500-1600 ; Language: Italian ; Origin: cavalleria , from cavaliere ; ⇨ ↑ cavalier ]
1 . the part of an army that fights on horses, especially in the past:
The Black Prince led a cavalry charge against them.
2 . the part of a modern army that uses ↑ tank s