To cut with shears; to shear or clip.
From 'be-' + 'shear.' The word 'shear' (to cut hair or wool) already worked as a verb, so 'beshear' offered an alternative or intensified form.
Think of it as an old way to say 'sheered' or 'clipped'—'beshear the sheep' instead of 'shear the sheep,' though the meaning is identical.
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