noun
Refers to a completely bald head, often with a shiny or smooth appearance. Can be used literally or descriptively.
彼は若い頃から光頭だった。
He has been bald since he was young.
光頭の男性が公園を歩いている。
A bald-headed man is walking in the park.
禿げ is a more common and colloquial term for baldness, often implying hair loss. 光頭 is more formal and emphasizes the shiny, smooth appearance of the bald head.
坊主頭 refers to a shaved head, often associated with Buddhist monks or a close-cropped hairstyle. 光頭 does not imply shaving and focuses on the baldness itself.
Compound of 光 (light, shine) and 頭 (head), literally 'shining head'. The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning of a bald, shiny head.