A less common variant spelling of binocular or a single eyepiece lens, particularly a handheld optical device for one eye.
From French 'binocle,' ultimately from Latin 'bi-' (two) and 'oculus' (eye); sometimes refers to monocle by confusion, showing how optical terminology evolved.
Binocle sits at a linguistic crossroads—it could mean two eyes or one eye depending on which language you're reading, revealing how the same prefix got translated differently across European languages.
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