头皮屑
Dandruff \Dandruff\, n. [Prob. from W. toncrust, peel, skin + AS. dr?f dirty, draffy, or W. drwg bad: cf. AS. tan a letter, an eruption. [root]240.] A scurf which forms on the head, and comes off in small or particles. [Written also {dandriff}.]
dandruff n 1: a condition in which white scales of dead skin are shed by the scalp 2: loose scales shed from the scalp; "I could see the dandruff on her shoulders"