From The Collaborative International Dictionary of English v.0.48 [gcide]: Bubble \Bub"ble\, v. i. [imp. & p. p. Bubbled; p. pr. & vb. n. Bubbling.] [Cf. D. bobbelen, Dan. boble. See Bubble, n.] 1. To rise in bubbles, as liquids when boiling or agitated; to contain bubbles. [1913 Webster] The milk that bubbled in the pail. --Tennyson. [1913 Webster] 2. To run with a gurgling noise, as if forming bubbles; as, a bubbling stream. --Pope. [1913 Webster] 3. To sing with a gurgling or warbling sound. [1913 Webster] At mine ear Bubbled the nightingale and heeded not. --Tennyson. [1913 Webster]