bur·ble / ˈbərbəl/ • v. [intr.] make a continuous murmuring noise: the wind burbled at his ear. ∎  speak in an unintelligible or silly way, typically at unnecessary length: he burbled on about annuities.• n. continuous murmuring noise.

burble †form bubbles, flow with bubbling sound XIV; (revived or formed afresh by Kipling) talk with a continuous murmur XIX. of imit. orig.; there are similar and synon. forms in Rom., e.g. Sp. borbollar bubble, gush, barbullar talk loud and fast, It. borbugliare.