Crossword Genius

Military vehicle such as the Chieftain or Sherman (4)

Ross

I believe the answer is:

tank

(Other definitions for tank that I've seen before include "A military vehicle or large container" , "Armour-plated military vehicle" , "One has gun" , "Container for fish (or soldiers?)" , "Military vehicle - fuel container" .)

I've seen this clue in The Times.
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