BABBLING

verb

1. To utter words indistinctly or unintelligibly; to utter inarticulate sounds
2. To talk incoherently; to utter meaningless words.
3. To talk too much; to chatter; to prattle.

noun

1. 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
2. Sounds produced by infant during the babbling period
3. Idle senseless talk; prattle.