bald man; shaven-headed man
Colloquial and somewhat humorous term for a man with a bald or closely shaven head, likening the smooth round head to an octopus and a monk. Not generally considered offensive, but can be teasing.
That bald man always wears a hat.
He's young but already bald, and he often gets teased about it.
Compound of 蛸 (たこ, 'octopus') and 坊主 (ぼうず, 'monk' or 'shaven head'), referring to the smooth, round shape of a bald head resembling an octopus and a monk's shaven pate. The exact origin is uncertain, but it is a colloquial metaphor.