noun
tomboy; boyish girl
Colloquial term for a girl or woman who uses the masculine first-person pronoun 俺 (ore) and often exhibits boyish behavior or speech patterns. Compare with おてんば娘, which emphasizes active, tomboyish behavior without necessarily using 俺.
See also: おてんば娘
彼女は俺女で、よく男言葉を使う。
She's a tomboy and often uses masculine speech.
あの俺女はサッカーが大好きだ。
That boyish girl loves soccer.
おてんば娘 refers to a lively, active girl with tomboyish behavior, but does not necessarily imply use of masculine pronouns. 俺女 specifically describes a girl who uses 俺 and often adopts masculine speech patterns.
Compound of 俺 (ore, masculine first-person pronoun) and 女 (onna, woman). The term likely arose in online or youth slang to describe girls who use 俺 to refer to themselves.