| flying frog |
any of several tree frogs of southeastern Asia having an expanse of webbing between the toes that allows them to make long gliding leaps. |
| flying gunnard |
any of several mostly tropical marine fishes with colorful winglike pectoral fins that enable them to glide above the water for short distances. |
| flying jib |
a small, light, triangular sail mounted out beyond the jib, usu. on an extension of the jib boom. |
| flying saucer |
any of various bright disk-shaped objects occasionally seen hovering or flying at high altitudes, often presumed to be spacecraft from another world; UFO. |
| flying squirrel |
a squirrel with winglike membranes connecting the forelegs to the hind legs, that enable it to make long gliding leaps through the air. |
| flying start |
a quick start or beginning, as in a race, project, or the like. [2 definitions] |
| fly in the face of |
to defy (authority, convention, or the like). |
| flyleaf |
the blank sheet or leaf in the front or back of a book. |
| fly off the handle |
to become suddenly enraged. |
| flypaper |
paper with a sticky, sometimes poisonous coating, often hung in narrow strips from the ceiling, to catch and kill flies. |
| flyspeck |
a small spot or speck made by a fly's excrement. [3 definitions] |
| fly swatter |
a device for killing insects, particularly flies, consisting of a flat rectangular mesh attached to a long handle. |
| fly the coop |
(informal) to escape from or as if from confinement. |
| flytrap |
a plant that traps insects, such as the Venus flytrap. |
| flyway |
a specific air route taken regularly by birds on their semiannual migrations to and from their breeding grounds. |
| flyweight |
a boxer who weighs 112 pounds or less and thus qualifies to compete in the lightest official weight class. |
| flywheel |
a heavy-rimmed wheel that rotates on a shaft and with its momentum serves to minimize variation in the speed of machinery connected to the shaft. |
| FM |
a system of varying a radio signal's frequency so as to impose the signal on a carrier wave; frequency modulation. [2 definitions] |
| Fm |
symbol of the chemical element fermium. |
| FNMA |
abbreviation of "Federal National Mortgage Association;" Fannie Mae. |
| f-number |
the relative aperture of a camera lens, representing the light it will transmit, which is obtained by dividing the focal length of the lens by the diameter of the aperture. |