jellyfish Meaning, Definition & Usage

  1. noun large siphonophore having a bladderlike float and stinging tentacles
    Portuguese man-of-war; man-of-war.
  2. noun any of numerous usually marine and free-swimming coelenterates that constitute the sexually reproductive forms of hydrozoans and scyphozoans

WordNet


Jel"ly*fish` noun
Definitions
  1. (Zoöl.) Any one of the acalephs, esp. one of the larger species, having a jellylike appearance. See Medusa.

Webster 1913