Babble

v. chatter; mumble; gush, bubble

n. chatter, prattle; muttering; gushing, bubbling

Babbling is a stage in child language acquisition, during which an infant appears to be experimenting with uttering sounds of language, but not yet producing any recognizable words. (Crucially, the larynx or voicebox, originally high in the throat to let the baby breathe while swallowing, descends during 'the first year of life', allowing a pharynx to develop and all the sounds of human speech to be formed ). Babbling begins at approximately 5 to 7 months of age, when a baby's noises begin to sound like phonemes. Infants begin to produce recognizable words usually around 12 months, though babbling may continue for some time afterward.
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Noun
1. gibberish resembling the sounds of a baby
(synonym) babbling, lallation
(hypernym) gibberish, gibber
Verb
1. utter meaningless sounds, like a baby, or utter in an incoherent way; "The old man is only babbling--don't pay attention"
(hypernym) talk, speak, utter, mouth, verbalize, verbalise
(derivation) chatterer, babbler, prater, chatterbox, magpie, spouter
2. to talk foolishly; "The two women babbled and crooned at the baby"
(synonym) blather, smatter, blether, blither
(hypernym) chatter, piffle, palaver, prate, tittle-tattle, twaddle, clack, maunder, prattle, blab, gibber, tattle, blabber, gabble
(derivation) chatterer, babbler, prater, chatterbox, magpie, spouter
3. flow in an irregular current with a bubbling noise; "babbling brooks"
(synonym) ripple, guggle, burble, bubble, gurgle
(hypernym) sound, go
(verb-group) gurgle
4. divulge confidential information or secrets; "Be careful--his secretary talks"
(synonym) spill the beans, let the cat out of the bag, talk, tattle, blab, peach, sing, babble out, blab out
(hypernym) disclose, let on, bring out, reveal, discover, expose, divulge, impart, break, give away, let out
(verb-group) spill, talk

(v. i.)
To utter words indistinctly or unintelligibly; to utter inarticulate sounds; as a child babbles.
  

(v. i.)
To utter in an indistinct or incoherent way; to repeat, as words, in a childish way without understanding.
  

(v. i.)
To talk much; to chatter; to prate.
  

(v. i.)
To talk incoherently; to utter unmeaning words.
  

(v. i.)
To make a continuous murmuring noise, as shallow water running over stones.
  

(v. i.)
To disclose by too free talk, as a secret.
  

(n.)
Inarticulate speech; constant or confused murmur.
  

(n.)
Idle talk; senseless prattle; gabble; twaddle.
  

In transmission systems, the aggregate of crosstalk induced in a given line by all other lines.