1.
tomboy, spirited girl
A girl who is energetic, active, and behaves in ways traditionally associated with boys. The term is generally affectionate rather than critical.
おてんばな女の子だ。
She's a tomboy.
Kanji: Can be written as お転婆.
Etymology: One theory traces it to Dutch ontembaar (untamable); others derive it from native words. The origin is uncertain.
Usage: Can function as a noun or as a na-adjective (おてんばな).
Nuance: Generally used affectionately or neutrally to describe an active, spirited girl. Not usually derogatory.
Related expression: 男勝り (a woman as capable as a man, often used for adult women).