Medical Dictionary


noun \ˈflī\
plural flies

Medical Definition of FLY

:  a winged insect—usually used in combination <emerging mayflies> <a large butterfly>
a :  any dipteran fly—called also true fly, two-winged fly b :  a large and stout-bodied dipteran fly (as a horsefly)
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears