[1] : The Collaborative International Dictionary of English v.0.48

jellyfish \jel"lyfish`\, n. zool.
   any one of the acalephs, esp. one of the larger species,
   having a jellylike appearance. see medusa and acaleph.
   1913 webster
see also:
medusa acaleph 

[2] : WordNet (r) 2.0

jellyfish
     n 1: large siphonophore having a bladderlike float and stinging
          tentacles syn: portuguese man-of-war, man-of-war
     2: any of numerous usually marine and free-swimming
        coelenterates that constitute the sexually reproductive
        forms of hydrozoans and scyphozoans syn: medusa, medusan
     also: jellyfishes pl
see also:
portuguese man-of-war man-of-war medusa medusan jellyfishes 

[3] : Moby Thesaurus II by Grady Ward, 1.0

50 moby thesaurus words for "jellyfish":
   chilopoda, chordata, echiuroidea, ectoprocta, entoprocta,
   milquetoast, monoplacophora, nemertinea, phoronidea, baby,
   big baby, chicken, chicken liver, coward, crybaby, doormat,
   dull tool, fence-sitter, fraid-cat, fraidy-cat, funk, funker,
   gutless wonder, invertebrate, lightweight, lily liver, meek soul,
   milksop, mollycoddle, mouse, mugwump, namby-pamby, nebbish,
   nonentity, pansy, pantywaist, pushover, sad sack, scaredy-cat,
   shilly-shally, sissy, softling, softy, sop, waverer, weak sister,
   weakling, white feather, white liver, wobbler

Jellyfish >> J Words
Jellyfish, definition of term: Jellyfish
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