blab /blæb/noun 2verb 2forms 3phrases 1 noun2 •Gossip; prattle.Audie never liked him because he was further in with old Craig than he was, bragging and blowing about his work and the things he could do, while Audie sat quiet as a mouse listening to his blab. — 1976 •One who blabs; a babbler; a telltale; a gossip or gossiper."You'd better have shoved your grey snout in a hornets' nest, Badger, than suggest that I am the blab," said Nikabrik. — 1951 verb2 •To tell tales; to gossip without reserve or discretion.And yonder a vile physician blabbing / The case of his patient. — 1855 •to speak carelessly or excessively formsblabbed · blabbing · blabs Phrases with blab blab outTo blab (something) (to speak carelessly or excessively).