Short informal word for binoculars; optical instruments with lenses for both eyes that make distant objects appear closer.
Shortened from 'binoculars' with the informal '-o' suffix common in English slang and casual speech; used predominantly since mid-20th century.
Bino is Australian/British slang that shows how a long technical term (binoculars from Latin 'bi-' two and 'oculus' eye) gets squished into something you'd shout on a sports field.
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