Akademik

opera glasses
noun
an optical instrument designed for simultaneous use by both eyes
Syn: ↑binoculars, ↑field glasses
Usage Domain: ↑plural, ↑plural form
Hypernyms: ↑optical instrument
Part Meronyms: ↑eyepiece, ↑ocular

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noun [plural]
: small binoculars that are designed to be used in a theater

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ˈopera glasses f7 [opera glasses] noun plural
small ↑binoculars that people use in a theatre to see the actors or singers on the stage

Useful english dictionary. 2012.