I. cit·rine ˈsi-ˌtrīn adjective
Etymology: Middle English, from Anglo-French citrin, from Medieval Latin citrinus, from Latin citrus citron tree
Date: 14th century
: resembling a citron or lemon especially in color
II. ci·trine si-ˈtrēn noun
Date: 1748
: a semiprecious yellow stone resembling topaz and formed by heating a black quartz in order to change its color