
1) Appendage 2) Extremity 3) Member 4) Pleopod
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https://www.crosswordclues.com/clue/swimmeret

1) Pleopod
Found on
https://www.crosswordclues.com/clue/swimmeret

Appendage on the abdomen; in crustaceans, females attach eggs to their swimmerets
Found on
http://myfwc.com/research/saltwater/crustaceans/blue-crabs/glossary/

• (n.) 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.
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http://thinkexist.com/dictionary/meaning/swimmeret/

(from the article `malacostracan`) The abdomen bears on each but the last segment a pair of ventral, or ventrolateral, biramous limbs called paraeopods, or pleopods, which are ...
Found on
http://www.britannica.com/eb/a-z/s/196
Swim'mer·et noun (Zoology) 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.
Found on
http://www.encyclo.co.uk/webster/S/258

[
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
Found on
http://www.webdictionary.co.uk/definition.php?query=swimmeret
pleopod 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
Found on
https://www.encyclo.co.uk/local/20974

(in many crustaceans) one of a number of abdominal limbs or appendages, usually adapted for swimming and for carrying eggs, as distinguished from other limbs adapted for walking or seizing.
Found on
https://www.infoplease.com/dictionary/swimmeret
No exact match found.