noun. refers to either; long-winded dialogue full of rhetoric or a line of conversation that one participant no longer wishes to follow; slang for bullshit, nonsense.
i'm not sure why but i can't get jibber jabber out of my head. i've now written it down and pinned it to my bulletin board. JIBBER-JABBER. its fun to say. its also fun to imagine it in mr. t's voice.