D defs.my
Entry 2 senses Webster, 1913

gasbag

· IPA /ˈɡæs.bæɡ/
01 n. a person who talks a great deal about uninteresting topics.
  1. 1.
    a person who talks a great deal about uninteresting topics.
  2. 2.
    the bag containing the gas in a balloon.
Syn. windbag. — Syn. -- envelope.