羽涅

yǔniè
  1. alumen
  2. alunite (TCM)

CEDICT

tcm

Entry Composition

1 羽 yǔ
  1. feather
  2. 5th note in pentatonic scale
=2 涅 niè
  1. (literary) alunite (formerly used as a black dye)
  2. (literary) to dye black
=2 涅 niè variant of 涅 niè