- flyfly1 [flī]vi.FLEW or, for vi. 10, flied, flown or, for vi. 10, flied, flying, flew [ME flien, flegen < OE fleogan, akin to MDu vlegen, Ger fliegen < IE * pleuk- < base * pleu-: see FLOW]1. to move through the air; specif.,a) to move through the air by using wings, as a bird doesb) to travel through the air in an aircraft or through space in a spacecraftc) to be propelled through the air2. to operate an aircraft or spacecraft3. to wave or float in the air, as a flag or kite does4. to move swiftly [the door flew open]5. to appear to pass swiftly [time flies]6. to be used up swiftly: said of money, etc.7. to run away; flee8. Informal to be successful, acceptable, etc. [that explanation just won't fly]9. to hunt with a hawk10. Baseball to hit a flyvt.1.a) to cause to float in the air [fly a kite]b) to display (a flag) as from a pole2. to operate (an aircraft or spacecraft)3.a) to travel over in an aircraftb) to travel via (a particular airline, aircraft, etc.)4. to carry or transport in an aircraft5. to run away from; flee from; avoid6. to use (a hawk) to hunt game7. Theater to suspend (flats, lights, etc.) in the space above the stagen.pl. flies1. Rare the act of flying; flight2.a) a garment closure concealing the zipper, buttons, etc. by a fold or flap of cloth, esp. such a closure in the front of a pair of trousers: in full fly frontb) such a fold or flap3.a) a flap serving as the door of a tentb) a piece of fabric serving as an outer or second top on a tent4.a) the length of an extended flag measured from the staff outwardb) the outside edge of a flag5. a regulating device, as for a clockwork mechanism, consisting of vanes radiating from a rotating shaft6.a) FLYWHEELb) FLYLEAF7. Brit. a hackney carriage8. Baseball a ball batted high in the air, esp. within the foul lines9. Football a pass pattern in which the receiver runs straight up the field at full speed10. [pl.] Theater the space behind and above the proscenium arch, containing overhead lights, raised flats, etc.——————fly atto attack suddenly by or as by flying or springing toward——————fly intoto have a violent outburst of [fly into a rage]——————fly offto go away quickly or suddenly; hurry off——————☆ fly out pt. & pp.fliedBaseball to be put out by hitting a fly that is caught by a fielder——————let fly at or let fly1. to shoot or throw (at)2. to direct a verbal attack (at)——————on the fly1. while in flight2. Informal while in a hurryfly2 [flī]n.pl. flies [ME flie < OE fleoge (akin to Ger fliege) < base fleogan: see FLY1]1.a) any dipterous insect; esp., the houseflyb) any of several four-winged insects from various orders, as the mayfly or caddis fly2. a hook covered with feathers, colored silk, etc. to resemble an insect, used as a lure in fishing: a wet fly drifts below the surface of the water, and a dry fly floats on it3. Printing a device on a flatbed press for removing and stacking the printed sheets——————fly in the ointmentanything, esp. a little thing, that reduces or destroys the value or usefulness of something elsefly3 [flī]adj.flier, fliest [orig., thieves' slang < ? FLY1]1. [Slang, Chiefly Brit.] alert and knowing; sharp; quick2. Slang fashionable, stylish, attractive, etc.
English World dictionary. V. Neufeldt. 2014.