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"