Definition of the word gasbag

The word "gasbag" has a fascinating origin. In the late 19th century, a gasbag was a type of flexible leather bag or tank used to store gas on hot air balloons. Over time, the term "gasbag" took on a figurative meaning, describing someone who talked or blew hot air, just like a gasbag would inflate with gas and then deflate. By the early 20th century, "gasbag" was being used to describe someone who tended to talk excessively, vacuously, or boastfully, often without any real substance or merit. The term's meaning has since evolved to include anyone who appears self-important, overly self-centered, or simply full of hot air.