Synonyms for Twinkling (same or very similar meaning)
WordNet sense 1 (a very short time (as the time it takes the eye blink or the heart to beat)):
flash, heartbeat, instant, jiffy, trice, wink, blink of an eye, New York minute, split secondWordNet sense 2 (emitting or reflecting light readily or in large amounts):
brightFrom the ODE community, based on WordNetadd/edit