Added 9 October 2026 eos noun Categories: PeopleRare Words noun ! Definition from WordNet 3.1, Princeton University. More about eos at Wordnik → Where our words come from → (Greek mythology) the winged goddess of the dawn in ancient mythology; daughter of Hyperion; identified with Roman Aurora. Related Words: canondawnsoeastraeusaurorahyperiondieshemeraheliostheiaeirene Back to today's word