mayfly

noun may·fly \ ˈmā-ˌflī \

Definition of mayfly

: any of an order (Ephemeroptera) of insects with an aquatic nymph and a short-lived, fragile adult lacking mouthparts and having membranous, heavily veined wings and two or three long, threadlike tails
Note: the wings of the mayfly are held vertically above the body when closed.
called also ephemerid

Recent Examples of mayfly from the Web

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Illustration of mayfly

First Known Use of mayfly

circa 1653


MAYFLY Defined for English Language Learners

mayfly

noun

Definition of mayfly for English Language Learners

  • : a small flying insect that lives for only a short time



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of very fine texture or delicate form

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