Ochre

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

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.