n.
头皮屑,头垢

Dandriff \Dan"driff\ (d[a^]n"dr[i^]f), n.
See {Dandruff}. --Swift.

Dandruff \Dandruff\ (d[a^]n"dr[u^]f), n. [Prob. from W.
toncrust, peel, skin + AS. dr[=o]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
scales or particles. [Written also {dandriff}.]