air-bladder
n. ஊதல் பை, காற்றுப்பை, மீனின் உள்ளுறுப்பு, மிதவைப்பை.
Air" blad`der. 1. (Anat.) Defn: An air sac, sometimes double or variously lobed, in the visceral cavity of many fishes. It originates in the same way as the lungs of air-breathing vertebrates, and in the adult may retain a tubular connection with the pharynx or esophagus. 2. A sac or bladder full of air in an animal or plant; also an air hole in a casting.