Meaning

• Any insect of the order Diptera; characterized by having two wings (except for some wingless species), also called true flies.

• (non-technical) Especially, any of the insects of the family Muscidae, such as the common housefly (other families of Diptera include mosquitoes and midges).

• Any similar, but unrelated insect such as dragonfly or butterfly.

• A lightweight fishing lure resembling an insect.

• A chest exercise performed by moving extended arms from the sides to in front of the chest. (also flye)

• A witch's familiar.

• A parasite.

• The butterfly stroke (plural is normally flys)

• (preceded by definite article) A simple dance in which the hands are shaken in the air, popular in the 1960s.