Green’s Dictionary of Slang

blabber n.

1. a newspaper.

1928

J. Callahan Man’s Grim Justice 173: The town blabber ran a story around the affair. They said I was a rowdy.

2. the mouth.

1942		Berrey & Van den Bark Amer. Thes. Sl.
1967–70		in DARE.

SE in slang uses

In compounds

blabberguts (n.) [-guts sfx]

(US) a gossip.

1977

(con. 1911) J. Monaghan Schoolboy, Cowboy, Mexican Spy 136: Hark that no ’count blabber-guts.

blabberskite (n.) [var. on SE blatherskite]

a voluble, boastful speaker.

2003

Arrowrock Chapter of Intercollegiate Knights Homepage 🌐 If you could change your haircolor, what would it be? Blabbering Blabberskite.