From WordNet (r) 3.0 (2006):
babble
n 1: gibberish resembling the sounds of a baby [syn: babble,
babbling, lallation]
v 1: utter meaningless sounds, like a baby, or utter in an
incoherent way; "The old man is only babbling--don't pay
attention"
2: to talk foolishly; "The two women babbled and crooned at the
baby" [syn: babble, blather, smatter, blether,
blither]
3: flow in an irregular current with a bubbling noise; "babbling
brooks" [syn: ripple, babble, guggle, burble,
bubble, gurgle]
4: divulge confidential information or secrets; "Be careful--his
secretary talks" [syn: spill the beans, let the cat out of
the bag, talk, tattle, blab, peach, babble,
sing, babble out, blab out] [ant: keep one's mouth
shut, keep quiet, shut one's mouth]