姑的笔画是：8画

姑gū

〈名〉

(1)(形声。从女，古声。本义：丈夫的母亲)

(2)同本义 [the mother of one"s husband]

(3)又如：翁姑姑嫜(古时妻子对丈夫父母的称呼，即公婆)

(4)父亲的姐妹 [aunt the sister of one"s father]

(5)又如：姑舅(姑母和舅父)姑姊(父之姐)姑姑姑婿

(6)丈夫的姐妹 [the sister of one"s husband]