From BiblePortal Wikipedia

Webster's Dictionary [1]

(1): ( a.) Cowardly; hence, dishonorable; mean; contemptible; as, he has a yellow streak.

(2): ( v. t.) To make yellow; to cause to have a yellow tinge or color; to dye yellow.

(3): ( v. i.) To become yellow or yellower.

(4): ( a.) Sensational; - said of some newspapers, their makers, etc.; as, yellow journal, journalism, etc.

(5): ( n.) A yellow pigment.

(6): ( superl.) 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.

(7): ( n.) 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.

Holman Bible Dictionary [2]

Yeraqraq   Psalm 68:13 Leviticus 13:49 Tsahob   Leviticus 13:30 13:32 13:36 tsahob Colors

King James Dictionary [3]

YELLOW, a. G. See Gold. Being of a bright color the color of gold.

YELLOW, n. A bright color, reflecting the most light of any, after white. It is one of the simple or primitive colors.

Hastings' Dictionary of the Bible [4]

Yellow . See Colours, § 1 .