Added 9 October 2026 thessaly noun Categories: PlacesRare Words noun ! Definition from WordNet 3.1, Princeton University. More about thessaly at Wordnik → Where our words come from → A fertile plain on the Aegean Sea in east central Greece; Thessaly was a former region of ancient Greece. Related Words: thessaliakarditsalarissatrikalathessalonicathesprotiaphthiotis Back to today's word