spawner

from WordNet (r) 3.0 (2006)

spawner
    n 1: a female fish at spawning time

from The Collaborative International Dictionary of English v.0.48

Spawner \Spawn"er\, n.
   1. (Zool.) A mature female fish.
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            The barbel, for the preservation or their seed, both
            the spawner and the milter, cover their spawn with
            sand.                                 --Walton.
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   2. Whatever produces spawn of any kind.
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