BLAB

I. noun Etymology: Middle English ~be; akin to Middle English ~eren Date: 14th century one that ~s ; tattletale , idle or excessive talk ; chatter , ~by adjective II. verb (~bed; ~bing) Date: 15th century intransitive verb to talk idly or thoughtlessly, to reveal a secret especially by indiscreet chatter, transitive verb to reveal especially without reserve or discretion