男子 (danshi) means “boy” | MotiTan Japanese Dictionary

More examples

その店には男子向けの服もあります。so no mise ni wa dan shi mu ke no fuku mo a ri ma su

There are also clothes for boys at that store.

It marks someone as belonging to the male group, covering both boys and men depending on the situation.

男の子otokonoko: A familiar term for a male child.

男の子または男性である者。otoko no ko ma ta wa dan sei de a ru mono

男子 (danshi) comes from the Sino-Japanese elements 男 (dan, "male") and 子 (shi, "child"), whose combination denotes a male person.

男子 (danshi) is common in labels and compounds such as 男子トイレ (danshi toire), where it refers to males generally rather than only to children.