|1.||to swell or cause to swell, as with a liquid, air, or wind|
|2.||to become or cause to be puffed up, as with conceit|
|3.||(tr) to cure (fish, esp herring) by half-drying in smoke|
|4.||vet science an abnormal distention of the abdomen in cattle, sheep, etc, caused by accumulation of gas in the stomach|
|[C17: probably related to Old Norse blautr soaked, Old English blāt pale]|
Abdominal distention due to swallowed air or intestinal gas production.