A red warning light, esp. (in later use) one instructing traffic to stop. Now frequently figurative: an indication of danger; a warning; a signal…
| 单词 | θ202699 |
| 释义 | society > travel > rail travel > railway system or organization > [noun] > types of signal system > specific signal (9) red light1790 A red warning light, esp. (in later use) one instructing traffic to stop. Now frequently figurative: an indication of danger; a warning; a signal… danger1841 spec. on Railways. Risk in a train's proceeding owing to an obstruction, etc. on the line; the position of a signal indicating this. danger-signal1848 a signal indicating danger; spec. on Railways, a signal (usually the extended arm of a signal-post painted red, or a red light) indicating an… line clear1869 Short for line of rail at sense 26b(c), railway line n. at railway, n. compounds 1a, tramline, n. Cf. branch III. highball signal1894 U.S. More fully highball signal. Railways slang. A signal to proceed given to a train driver, originally by raising a ball attached to a pole. Now… starter1895 Railways. A signal used to indicate that a train may start. red board1903 (a) a stop signal on a railway; (b) a board on which the official results of a horse race are posted (also in extended use). stop signal1923 a signal indicating whether a train should stop. identification light1931 |
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