n. 1 establishment for managing a watersupply. 2 collog. shedding of tears. 3 colloq. urinary system. watery adj. 1 containing too much water. 2 too thin in consistency. 3 of or consisting of water. 4 vapid, uninteresting. 5 (of colour) pale. 6 (of the sun, moon, or sky) rainylooking. 7 (of eyes) moist; tearful. wateriness n.