VALUE (3)

Val″ue (?), n. 1. 1. (a) That property of a color by which it is distinguished as bright or dark; luminosity. (b) Degree of lightness as conditioned by the presence of white or pale color, or their opposites.
2. 2. (Math.) Any particular quantitative determination; as, a function's value for some special value of its argument.
3. 3. [pl.] The valuable ingredients to be obtained by treatment from any mass or compound; specif., the precious metals contained in rock, gravel, or the like; as, the vein carries good values; the values on the hanging walls.