['әukә(r)]
n.
黄土, 赭土

Ocher \O"cher\, Ochre \O"chre\, n. [F. ocre, L. ochra, fr. Gr.
?, from (?) pale, pale yellow.]
1. (Min.)
(a) A impure earthy ore of iron or a ferruginous clay,
usually red (hematite) or yellow (limonite), -- used
as a pigment in making paints, etc. The name is also
applied to clays of other colors.
(b) A metallic oxide occurring in earthy form; as,
tungstic ocher or tungstite.

2. The color of ocher[1], varying around orange, from more
yellowish to more reddish in tint.
[PJC]