I. ˈōəˌlīn, -lēn adjective
Etymology: opal + -ine
: resembling opal especially in appearance : opalescent
II. |ōpə|lēn noun
( -s )
1. : any of several minerals related to or resembling opal
2.
a. : a French decorative opalescent glassware developed in the late 18th century
b. : milk glass
3. : an opaline color or surface