yellow

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The hue of that portion of the visible spectrum lying between orange and green, evoked in the human observer by radiant energy with wavelengths of approximately 570 to 590 nanometers; any of a group of colors of a hue resembling that of ripe lemons and varying in lightness and saturation; one of the subtractive primaries; one of the psychological primary hues.
• noun A pigment or dye having this hue.
• noun Something that has this hue.
• noun Chiefly Southern US The yolk of an egg.
• noun Western US Gold. Used formerly by prospectors.
• noun Any of various plant diseases characterized by yellow or yellowish discoloration of the leaves and caused by phytoplasmas that are transmitted by insects or by certain viruses.
• adjective Of the color yellow.
• adjective Having a yellow-brown skin color.
• adjective Offensive Of or being a person of Asian origin.
• adjective Slang Cowardly.
• transitive & intransitive verb To make or become yellow.

from The Century Dictionary.

• To render yellow.
• To become yellow; grow yellow.
• As originally applied to journalism, indecently sensational; in general, sensational; morbid; decadent. See yellow journal.
• noun An acid coal-tar color of the monoazo type prepared by combining diazotized meta-sulphanilic acid with diphenyl amine. It dyes wool orange-yellow in an acid bath.
• noun Same as yellow, 1 .
• noun Same as diphenylamine-orange (which see, under orange).
• Of a color resembling that of gold, butter, etc. See II.
• See balsam.
• A mulatto or a dark quadroon: used (as also yellow girl) both by whites and by negroes.
• The yellow star-thistle, Centaurea solstitialis.
• Seeflag and Iris.
• See yellow-gum.
• See Micropterus.
• In entomology, Peck's skipper, Polites peckius, a small hesperian butterfly of America, of a brownish color with a large yellow blotch on each hind wing.
• noun The color of gold, butter, the neutral chromates of lead, potassa, etc., and of light of wave-length about 0.581 micron.
• noun The yolk of an egg; the vitellus: opposed to the white, or the surrounding albumen.
• noun plural Jaundice, especially jaundice in cattle (see jaundice); hence, figuratively, jealousy.
• noun plural Dyer's-weed.
• noun Same as peach-yellows.
• noun One of certain geometrid moths: an English collectors' name: as, the speckled yellow.
• noun Any one of the group of small yellow butterflies; a sulphur. See sulphur, n., 3.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To become yellow or yellower.
• transitive verb To make yellow; to cause to have a yellow tinge or color; to dye yellow.
• noun A bright golden color, reflecting more light than any other except white; the color of that part of the spectrum which is between the orange and green.
• noun A yellow pigment.
• noun See under Cadmium, Chrome, etc.
• noun a yellow amorphous pigment, used in oil, porcelain, and enamel painting, consisting of a basic lead metantimonate, obtained by fusing together tartar emetic lead nitrate, and common salt.
• noun (Old Chem.) a yellow pigment consisting essentially of a lead oxychloride; -- called also Turner's yellow.
• adjective Being of a bright saffronlike color; of the color of gold or brass; having the hue of that part of the rainbow, or of the solar spectrum, which is between the orange and the green.
• adjective Slang Cowardly; hence, dishonorable; mean; contemptible.
• adjective colloq. Sensational; -- said of some newspapers, their makers, etc.
• adjective (Med.) a fatal affection of the liver, in which it undergoes fatty degeneration, and becomes rapidly smaller and of a deep yellow tinge. The marked symptoms are black vomit, delirium, convulsions, coma, and jaundice.
• adjective calisaya bark.
• adjective (Zoöl.) a North American fresh-water bass (Morone interrupta) native of the lower parts of the Mississippi and its tributaries. It is yellow, with several more or less broken black stripes or bars. Called also barfish.