9 letters · 11 points in Scrabble
originFrom Ancient Greek οὐροβόρος (ourobóros, “tail-devouring”, a compound of οὐρά (ourá, “tail”) + -βόρος (-bóros, “-devouring”, which is derived from the verb βιβρώσκω (bibrṓskō, “to eat up”))).
Etymology from Wiktionary, CC BY-SA 3.0