Jellyfish (noun)
definition:
any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans
example:
"I study the distribution of jellyfish."
Jellyfish (noun)
definition:
large siphonophore having a bladderlike float and stinging tentacles
example:
"I got stung by jellyfish on the beach."
Synonyms
Man-of-war