To shine forth, sparkle, or emit flashes of light like a glimmer or flash.
From Latin 'emicare,' combining 'e-' (out) and 'micare' (to flash or flicker). This verb form appeared in English during the 1600s, describing the action of emitting light in quick bursts.
Medieval Latin writers used 'emicate' to describe how stars appear to twinkle in the night sky, and the word's similarity to 'emaciate' (to waste away) is pure coincidence, though both involve the prefix 'e-' meaning outward.
Complete word intelligence in one call. Free tier — 50 lookups/day.