ocher

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of several earthy mineral oxides of iron occurring in yellow, brown, or red and used as pigments.
2. n. A moderate orange yellow, from moderate or deep orange to moderate or strong yellow.

Century Dictionary and Cyclopedia

1. n. The common name of an important class or natural earths consisting of mixtures of the hydrated sesquioxids of iron with various earthy materials, principally silica and alumina. These mixtures occur in many localities and have many shades of color, among which tints of red, reddish brown, yellow, and orange are most common. They form a series of valuable and important pigments, used extensively alike by house-painters and artists both in oil and in water-colors. The most usual and common type of ocher-color is a yellow turning neither to red on the one hand nor to brown on the other, but its tone is not as brilliant nor as pure as chrome-yellow. (For varieties, see below.) Ochers in general have much body and are very permanent. Most ochers on burning become redder and darker. Raw sienna and raw umber are varieties of ocher.
2. n. Money, especially gold coin: so called in allusion to its color.
3. n. A metallic oxid which occurs in the form of earthy powder or easily crumbled mass: as antimony ocher; bismuth ocher; tungstic ocher.
4. To mark or stain with ocher.

Wiktionary

1. n. alternative spelling of ochre.

GNU Webster's 1913

1. 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.
2. n. A metallic oxide occurring in earthy form.
3. n. The color of ocher{1}, varying around orange, from more yellowish to more reddish in tint.

WordNet 3.0

1. n. any of various earths containing silica and alumina and ferric oxide; used as a pigment
2. n. a moderate yellow-orange to orange color
3. adj. of a moderate orange-yellow color