Swimmeret

2 definitions found

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

  Swimmeret \Swim"mer*et\, n. (Zool.)
     One of a series of flat, fringed, and usually bilobed,
     appendages, of which several pairs occur on the abdominal
     somites of many crustaceans. They are used as fins in
     swimming.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  swimmeret
       n : one of the paired abdominal appendages of certain aquatic
           crustaceans that function primarily for carrying the eggs
           in females and are usually adapted for swimming [syn: {pleopod}]