The Collaborative International Dictionary of English v.0.48:
burbling \burbling\ burbly \burbly\adj. 1. uttered with unrestrained enthusiasm; as, a novel told in burbly panting tones. Syn: effusive, gushing. [WordNet 1.5] 2. bubbling; -- of sounds, especially of water. [PJC]WordNet (r) 3.0 (2006):
burbling adj 1: uttered with unrestrained enthusiasm; "a novel told in burbly panting tones" [syn: burbling, burbly, effusive, gushing]