BLACK OPAL

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A dark colored opal with internal reflections of green or red

Classified under:

Nouns denoting substances

Hypernyms ("black opal" is a kind of...):

opal (a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones)

Credits