| flare up |
to suddenly burst forth in anger. |
| flaring |
of a flame, increasing suddenly and briefly in intensity. [2 definitions] |
| flash |
a sudden, brilliant light that vanishes almost instantly. [17 definitions] |
| flashback |
a past event that interrupts the forward action of a play, movie, novel, or the like. [2 definitions] |
| flashbulb |
an electric bulb that gives a brief flash of very bright light when ignited, used to illuminate a subject while a photograph is taken. |
| flash burn |
damage to body tissue from extreme radiated heat, esp. from a nuclear explosion. |
| flashcard |
any of a set of cards bearing words, numbers, or pictures, flashed briefly before a student or class to prompt a quick response in a drill. |
| flashcube |
a small, disposable cube with four flashbulbs that attaches to a camera and is automatically turned after each picture is taken. |
| flasher |
a mechanism that causes an electric light to go on and off automatically. [2 definitions] |
| flash flood |
a sudden and violent flood following an esp. heavy rainfall. |
| flashing |
sheet metal or other material used to reinforce and weatherproof building joints. |
| flash in the pan |
one who succeeds brilliantly for a brief time only. |
| flashlight |
a hand-held, usu. battery-powered lamp. |
| flash point |
the lowest temperature at which a combustible liquid will give a flash of light when heat is applied. [2 definitions] |
| flashy |
brilliant or impressive on the surface or for a short time only. [2 definitions] |
| flask |
a rounded or cone-shaped bottle with a narrow neck that sometimes widens at the top, often with a fitted top or stopper. [2 definitions] |
| flat1 |
having a horizontal surface. [17 definitions] |
| flat2 |
(chiefly British) a group of connected rooms forming a residence on one floor; apartment. |
| flatbed |
a truck or trailer having a flat or shallow platform with no sides or top as its body. |
| flatboat |
a flat-bottomed boat used for transporting goods on shallow waters. |
| flatcar |
a railroad car having a flat platform with no walls or roof. |