谷壳

穀殼
gǔké
husk (of rice etc); chaff

CEDICT

husk; chaff (of rice, etc.)

Wiktionary

穀物种子上乾燥、鳞片状的物质

維基詞典

Entry Composition

=1 谷 gǔ
  1. grain
  2. corn
=1 谷 gǔ valley
2 壳 ké
  1. (coll.) shell (of an egg, nut, crab etc)
  2. case; casing; housing (of a machine or device)