Source : Webster's Revised Unabridged Dictionary (1913)

Affine \Af*fine"\, v. t. [F. affiner to refine; ? (L. ad) + fin
   fine. See {Fine}.]
   To refine. [Obs.] --Holland.

Source : WordNet®

affine
     adj : related by marriage [syn: {affinal}]

affine
     n : (anthropology) kin by marriage