noun
A type of fish that can inflate itself into a ball shape as a defense mechanism
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The puffer fish, also known as a blowfish, is a type of fish that can inflate itself to deter predators.
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I saw a puffer fish puffing up in the aquarium today, it was so cool!
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That puffer fish is like a little water balloon, so cute!
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She felt like a puffer fish puffing up with pride after receiving the award.