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Ochre

Definition: 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.

Ochre

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

Ochre

Definition: See Ocher.