Dictionary Definition:
Vassati2 [vāś to bellow, Vedic vāśyate; Dhtm 471: "sad- dane"] to utter a cry (of animals), to bellow, bark, to bleat, to crow etc. S ii.230; J i.436 (of a cock);ii.37, 153, 307; iii.127; vi.497 (ppr. vassamāna=vāsamāna C.). -- pp. vassita2.