{ 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.