Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun gasbag

2 senses of gasbag

Sense 1
gasbag, windbag -- (a boring person who talks a great deal about uninteresting topics)
       => bore, dullard -- (a person who evokes boredom)

Sense 2
envelope, gasbag -- (the bag containing the gas in a balloon)
       => bag -- (a flexible container with a single opening; "he stuffed his laundry into a large bag")