A red warning light, esp. (in later use) one instructing traffic to stop. Now frequently figurative: an indication of danger; a warning; a signal…
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| 释义 | society > travel > transport > transport or conveyance in a vehicle > vehicular traffic > [noun] > traffic control > traffic lights > specific (11) 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… green arrow1875 the common Eurasian yarrow, Achillea millefolium. amber light1896 A yellow or amber warning light used to instruct traffic; esp. the middle of three lights in a set of traffic lights, serving as a warning that the… yellow1900 A yellow or amber warning light used to instruct traffic; esp. the middle of three lights in a set of traffic lights, serving as a warning that… yellow light1920 A yellow or amber warning light used to instruct traffic; esp. the middle of three lights in a set of traffic lights, serving as a warning that… amber1929 An amber traffic light. See sense B. 1c, and cf. amber light, n. 1, yellow, n. 2j. stop light1930 (a) = stop lamp n. above; (b) North American = stop sign n. below; also figurative. stop sign1934 a sign indicating that traffic should stop; North American spec., a red traffic-light. filter1939 In sense 5, as filter arrow, filter lane, filter light, etc. red1940 A red light, flag, etc., intended as a signal to stop; esp. the red light in a set of traffic lights. green1962 A green light or flare, etc., used as a signal. Also figurative. Cf. sense A. 4a. |
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