What is the meaning of Tomboy?

A girl who behaves in a typically boyish manner.

A rude, boisterous boy.

An immodest or bold woman.

A butch lesbian.

a girl who behaves in a typically boyish manner

a lesbian; butch

tomboy (a girl who behaves in a typically boyish manner)

a lesbian; butch

A girl or woman with a masculine appearance and taste in clothing.

tomboy (a boyish girl or woman)

tomboy; boyish girl

butch; lesbian

Source: wiktionary.org