Lallation
Part of speech: noun
Definition: the incorrect pronunciation of the letter "r" so that it sounds like an "l" baby-talk or gibberish
Babble
Part of speech: noun
Definition: Idle talk; senseless prattle; gabble; twaddle.Inarticulate speech, such as was used at the building the tower of Babel; constant or confused murmur.A sound of or alike that which of flowing water.
Part of speech: verb
Definition: To utter words indistinctly or unintelligibly; to utter inarticulate sounds; as, a child babbles.To talk incoherently; to utter unmeaning words.To talk much; to chatter; to prate.To make a continuous murmuring noise, as shallow water running over stones.To utter in an indistinct or incoherent way; to repeat, as words, in a childish way without understanding.To disclose by too free talk, as a secret.