complete baldness; totally bald
Describes a head that is completely bald, often with a smooth, shiny appearance. Can be used literally or humorously.
He has been completely bald since he was young.
That monk keeps his head completely shaved.
Compound of 丸 (まる, 'round, complete') and 禿 (はげ, 'baldness'). The exact historical derivation is uncertain, but the word transparently means 'completely bald'.