rice bran
糠 centers on the powdery outer layer of rice grains: rice bran, the byproduct of polishing rice.
糠 combines 米 (rice) with 康, which likely contributes the sound and may relate to the idea of husks or chaff. The exact historical development of the right component is uncertain.
The left side is 米 (rice), and the right side 康 looks like a roof over a complex structure. Picture rice grains being polished under a mill roof, and the powdery bran that falls away is 糠.
For コウ, imagine a coat of rice bran dust covering the mill: coat -> コウ, and the bran coats everything.
rice bran
rice bran
pityriasis rosea Gibert
rice bran
redtop (species of bent grass, Agrostis gigantea)
light or fine rain; drizzle
bran; husks
pityriasis
chaff and bran; plain food
one's devoted wife; wife who has followed one through hard times; wife married in poverty
having no effect; waste of effort
salted rice-bran paste for pickling
biting midge (any insect of family Ceratopogonidae); no-see-um
rice-bran oil
silver hairgrass (Aira caryophyllea)
biting midge; no-see-um (any insect of family Ceratopogonidae)
biting midge (any insect of family Ceratopogonidae); no-see-um