Blab \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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Blab \Blab\, v. i. To talk thoughtlessly or without discretion; to tattle; to tell tales.

She must burst or blab. --Dryden.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Blab \Blab\, n. [OE. blabbe.]

One who blabs; a babbler; a telltale. ``Avoided as a blab.'' --Milton.

For who will open himself to a blab or a babbler. --Bacon.

Source: Webster's Revised Unabridged Dictionary (1913)