Sheridan tank

Sheridan tank

[′sher·ə·dən ‚taŋk] (ordnance) The United States' light tank, M551, introduced into limited service in 1967; it can be transported by air and dropped by parachute, has a crew of four, weighs 15 tons (13,600 kilograms), and is armed with a 152-millimeter gun launcher and two machine guns.