fly-fishing
- n angling with an artificial fly as a lure
- v fish with flies as lures
fly agaric
- n poisonous (but rarely fatal) woodland fungus having a scarlet cap with white warts and white gills
fly ash
- n fine solid particles of ash that are carried into the air when fuel is combusted
fly bridge
- n the highest navigational bridge on a ship; a small (often open) deck above the pilot house