Blab (�), v. t. [imp. & p. p.Blabbed (�); p. pr. & vb. n.Blabbing.] [Cf. OE. blaberen, or Dan. blabbre, G. plappern, Gael. blabaran a stammerer; prob. of imitative origin. Cf. also Blubber, v.] To utter or tell unnecessarily, or in a thoughtless manner; to publish (secrets or trifles) without reserve or discretion. Udall.
And yonder a vile physician blabbing
The case of his patient.
Tennyson.