9 letters · 17 points in Scrabble
noun clock that measures time by the escape of water
originFrom Latin clepsydra, from Ancient Greek κλεψύδρα (klepsúdra), from κλέπτειν (kléptein, “to steal”) + ὕδωρ (húdōr, “water”).
Etymology from Wiktionary, CC BY-SA 3.0