a. [ Cf. F. opalin. ] Of, pertaining to, or like, opal in appearance; having changeable colors like those of the opal. [ 1913 Webster ]
n. 1. An opaline variety of yellow chalcedony. [ Webster 1913 Suppl. ]
2. Opal glass. [ Webster 1913 Suppl. ]
3. An opaline color or expanse. [ Webster 1913 Suppl. ]