Jellyfish Definition

jĕlē-fĭsh
jellyfishes
noun
jellyfishes
Any of various free-swimming, mostly marine cnidarians (esp. class Scyphozoa) with a body made up largely of jellylike substance and shaped like an umbrella: it has long, hanging tentacles with stinging cells on them.
Webster's New World
Any of various similar or related cnidarians.
American Heritage Medicine
A weak-willed person.
Webster's New World
One who lacks force of character; a weakling.
American Heritage

(zoology) An almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance.

Wiktionary

Other Word Forms of Jellyfish

Noun

Singular:
jellyfish
Plural:
jellyfishes

Origin of Jellyfish

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jellyfish