O"cher, O"chre (?), n. [F.ocre, L. ochra, fr. Gr. , from () pale, pale yellow.] 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.
© Webster 1913.