To cover or decorate with spangles (shiny metal discs); to make sparkle or shine.
From 'spangle' (a small shiny ornament) plus 'en-' prefix. 'Spangle' comes from Middle Low German 'spange' (clasp/brooch), related to Old Norse 'spöng.'
Medieval armor-makers used 'enspangled' to describe knights whose armor had been covered with shiny metal ornaments catching candlelight—it's a word that literally sparkles with visual richness when you say it aloud.
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