Kunoichi

Kunoichi (くノ一^?) is the term for a female ninja^[1] or practitioner of ninjutsu (ninpo).^[2]
 The term is thought to derive from the names of characters that resemble the three strokes in the kanji character for woman (女 onna^?); said in the order they are written: ku (く) - no (ノ) - ichi (一).