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.

A metallic oxide occurring in earthy form; as, tungstic ocher or tungstite.

The color of ocher{1}, varying around orange, from more yellowish to more reddish in tint.

Ocher is a village in the Perm region of Russia, where a number of important discoverieds of Permian fossil reptiles (especially Therapsids) have been made, beginning in 1952.