bula' noun English. Foam on a liquid, froth, suds. Example sentence: Subanen. Ki tubig sa' bungabung lungkanlungkan bula' ndi' mu maita'i laksaden. English. When a watercourse is a rapid where it's entirely foam, you won"t see it's bottom. bula' gatas noun Note. White spots, considered to be milk, on the tongue of an infant.