sea squirt

from WordNet (r) 3.0 (2006)
sea squirt
    n 1: ascidian that can contract its body and eject streams of
         water
from The Collaborative International Dictionary of English v.0.48
Sea squirt \Sea" squirt`\ (Zool.)
   An ascidian. See Illust. under {Tunicata}.
   [1913 Webster]
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