| fly 2 (def. 1). |
| 1. | Also called true fly. any of numerous two-winged insects of the order Diptera, esp. of the family Muscidae, as the common housefly. |
| 2. | any of various winged insects, as the mayfly or firefly. |
| 3. | Angling. a fishhook dressed with hair, feathers, silk, tinsel, etc., so as to resemble an insect or small fish, for use as a lure or bait. |
| 4. | (initial capital letter ) Astronomy. the constellation Musca. |
| 5. | fly in the ointment, a detrimental factor; detraction: If there's one fly in the ointment, it's that there may not be the money to finish the job. |

fly
|
fly (flī)
n.
Any of numerous two-winged insects of the order Diptera.
| fly (flī) Pronunciation Key
Any of numerous insects of the order Diptera, having one pair of wings and large compound eyes. Flies include the houseflies, horseflies, and mosquitoes. See more at dipteran. |