A girlish boy.

(idiomatic) A male exemplar of some trait.

A young man who has become unusually successful at an early age. / A favored youth, held in high esteem by others, and for whom there are high hopes.

(UK) A male day pupil.

(Britain) A boy chosen to lead a school sixth form, whose duties may include representing the school and organising the prefects.

(sports) A person, usually male, responsible for retrieving balls from the area of play, and returning them to the players.

(Tyneside) A man who works on market stalls (barras).

(derogatory) Term of offense directed at a man who assumes perceived traits of a monkey, e.g. excessive hairiness or impish behaviour.

(slang) A male who performs b-boying or breaking, commonly called breakdance; a breaker. / (slang) A male member of the hip-hop subculture.

(slang) To breakdance.