Farmers Slang & Its Analogues. 18901909, rev. 2022.
Wind-bag
subs. phr. (common).An incessant frothy talker: also GAS-BAG.
1
1889. The Sportsman, 19 Jan. Hereafter he can have the newspapers to himself, and with that WINDBAG Mitchell fill them with guff and nonsense, but I wont notice them.