to set with jewels; to adorn or decorate with precious stones or gems.
From en- + jewel (from Old French jouel, of uncertain ultimate origin, possibly from Latin iocale meaning 'plaything'). The verb describes the act of embellishing with jewels.
Medieval poets would describe a queen's dress as 'enjeweled' to show luxury and magnificence—the en- prefix made the noun into an action, turning 'jewel' into the act of making something precious.
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