to fit with a collar or to encircle with something like a collar.
From 'be-' prefix plus 'collier' (related to 'collar'). This rare term would describe the act of placing a collar around something, primarily used in historical or technical contexts.
This word is so obscure it's almost archaeological—it represents English's medieval eagerness to make verbs from any noun by adding 'be-', creating thousands of words, most of which disappeared.
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