crew cut
A very short hairstyle typically for men. Its name is thought to come from its initial popularity among rowers. The coach makes us all get crew cuts at the start of the season because long hair isn't allowed on the team.
crew cut
A closely cropped haircut, usually for a male, as in The boys all think crew cuts are cooler in summer. This term presumably originated in the navy ( crew referring to a ship's crew), where such a haircut was mandatory. [c. 1940]