0 to spread over a large area, or (especially of things made of cloth) to become filled with air and appear to be larger -- 波浪般起伏，洶湧向前；（尤指布製品因充氣）鼓起
Inflation occurs through several strategies: pumps, ram-air, billowing, and suction.
Smoke billowed in the background and road flares flickered brightly.
The weather was hot and enormous clouds of dust billowed over the march.
Ten days of life is all that is left for someone who has smoke billowing out of his head.
The boy's enthusiasm and energy is evident in his forward-thrusting pose and billowing clothes.
My dress was billowing and had long pink sleeves.
Smoke billowed from the building after the raid, witnesses said.
He is wreathed in the folds of a large cloak which billows in the wind.
