binoculars UK /bɪˈnɒk.jʊ.lə(ɹ)z/US /(ˌ)baɪˈnɑ.kjə.lɚz/ noun[usually plural]1 •A hand-held device consisting of a series of lenses and prisms, used to magnify objects so that they can be better seen from a distance, and looked at through both eyes. formsbinocular