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  1. a bag for holding gas, as in a balloon or dirigible.
  2. Slang. a talkative, boastful person; windbag.

Origin of gasbag

First recorded in 1820–30; gas + bag
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for gasbag


  1. a person who talks in a voluble way, esp about unimportant matters
verb -bags, -bagging or -bagged
  1. (intr) Irish to talk in a voluble way, esp about unimportant matters
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012