| 单词 | flash |
| 释义 | flash v., n., & adj. --v 1. intr. & tr. emit or reflect or cause to emit or reflect light briefly, suddenly, or intermittently; gleam or cause to gleam. 2. intr. break suddenly into flame; give out flame or sparks. 3. tr. send or reflect like a sudden flame or blaze (his eyes flashed fire). 4. intr. a burst suddenly into view or perception (the explanation flashed upon me). b move swiftly (the train flashed through the station). 5. tr. a send (news etc.) by radio, telegraph, etc. (flashed a message to her). b signal to (a person) by shining lights or headlights briefly. 6. tr. colloq. show ostentatiously (flashed her engagement ring). 7. intr. (of water) rush along; rise and flow. 8. intr. sl. indecently expose oneself. --n 1. a sudden bright light or flame, e.g. of lightning. 2. a very brief time; an instant (all over in a flash). 3. a a brief, sudden burst of feeling (a flash of hope). b a sudden display (of wit, understanding, etc.). 4. = NEWSFLASH. 5. Photog. = FLASHLIGHT 1. 6. a a rush of water, esp. down a weir to take a boat over shallows. b a contrivance for producing this. 7. Brit. Mil. a coloured patch of cloth on a uniform etc. as a distinguishing emblem. 8. vulgar display, ostentation. 9. a bright patch of colour. 10. Cinematog. the momentary exposure of a scene. 11. excess plastic or metal oozing from a mould during moulding. --adj colloq. 1. gaudy; showy; vulgar (a flash car). 2. counterfeit (flash notes). 3. connected with thieves, the underworld, etc. Phrases and idioms flash-board a board used for sending more water from a mill-dam into a mill-race. flash bulb Photog. a bulb for a flashlight. flash burn a burn caused by sudden intense heat, esp. from a nuclear explosion. flash card a card containing a small amount of information, held up for pupils to see, as an aid to learning. flash-cube Photog. a set of four flash bulbs arranged as a cube and operated in turn. flash-flood a sudden local flood due to heavy rain etc. flash-gun Photog. a device used to operate a camera flashlight. flashing-point = FLASHPOINT. flash in the pan a promising start followed by failure (from the priming of old guns). flash-lamp a portable flashing electric lamp. flash out (or up) show sudden passion. flash over Electr. make an electric circuit by sparking across a gap. flash-over n. an instance of this. Etymology: ME orig. with ref. to the rushing of water: cf. SPLASH |
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