Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

air bladder

noun [C]
 
 
specialized

Definition

a small bag of air or gas inside a fish's body, that helps it to float or breatheSubstances and structures in the bodyThe respiratory system
(Definition of air bladder noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Word of the Day

throw caution to the wind/winds

to do something without worrying about the risk or negative results

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More