5 letters · 7 points in Scrabble
noun an abnormal new mass of tissue that serves no purpose
originFrom Middle English tumour, from Old French tumour, from Latin tumor (“swelling”), from tumeō (“bulge, swell”, verb), from Proto-Italic *tumēō, from Proto-Indo-European *tewh₂- (“to swell”). Related to English thumb.
Etymology from Wiktionary, CC BY-SA 3.0