9 letters · 17 points in Scrabble
originBorrowed from Latin gynaecēum, gynaecīum, from Ancient Greek γυναικεῖον (gunaikeîon), from γυνή (gunḗ, “woman”) (stem: γῠναικ- (gŭnaik-)) + -εῖον (-eîon, noun-forming suffix meaning “place or building associated with a specific purpose or person”).
Etymology from Wiktionary, CC BY-SA 3.0