To make someone a king or to treat someone as a king; the present participle of 'beking.'
From 'be-' prefix combined with 'king.' The 'be-' prefix transforms the noun 'king' into a verb meaning to install as king or show royal treatment.
The verb 'be-' transformation was especially popular in Medieval and Elizabethan English—you could 'befool' (make a fool of) someone or 'begod' (treat as divine), revealing how creative speakers were with word formation.
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