To swell out or bulge.
To surge or roll in billows.
A large wave, swell, surge, or undulating mass of something, such as water, smoke, fabric or sound
To swell due to injury or illness.
To inflate with air.
To become proud. (Often written as puffed up with pride.)
To fluff up, such as an animal raising its fur or feathers to appear larger or conserve body heat.