Mayfly Definition
 māflī 
  mayflies
  
    noun
  
 
    mayflies
  
Any of an order (Ephemeroptera) of delicate, soft-bodied insects with gauzy wings held vertically when at rest: in the adult stage, it lives only hours or a few days, but the aquatic larval stage may last for several years.
 Webster's New World 
Other Word Forms of Mayfly
Noun
Singular:
 mayflyPlural:
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