Synonyms for Dawn (same or very similar meaning)
WordNet sense 1 (the first light of day):
aurora, cockcrow, daybreak, morning, sunrise, sunup, dawning, dayspring, break of day, break of the day, first lightWordNet sense 2 (become clear or enter one's consciousness or emotions):
click, penetrate, get through, get across, come home, fall into place, sink inFrom the ODE community, based on WordNetadd/edit