8 letters · 14 points in Scrabble
noun a seven-sided polygon
originSince 16th century, from Ancient Greek ἑπτάγωνον (heptágōnon), from ἑπτά (heptá, “seven”) + γωνία (gōnía, “angle”). By surface analysis, hepta- + -gon.
Etymology from Wiktionary, CC BY-SA 3.0