swimmeret Meaning, Definition & Usage
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noun 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
pleopod.
WordNet
Swim"mer*et noun
Definitions
(Zoöl.) 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.