In plural. North American. The headlights of a motor vehicle when on the undipped and brightest setting. Cf. high beam n. at high, adj. n.2compoun…
| 单词 | θ202062 |
| 释义 | society > travel > means of travel > a conveyance > vehicle > powered vehicle > parts and equipment of motor vehicles > [noun] > headlight > main beam (4) brights1920 In plural. North American. The headlights of a motor vehicle when on the undipped and brightest setting. Cf. high beam n. at high, adj. n.2compoun… high beam1932 the setting at which a vehicle's headlights are undipped and brightest; (usually in plural) a beam from a headlight on this setting; cf. main beam n.… full beam1934 The setting at which a vehicle's headlights are undipped and brightest; a beam from a headlight on this setting. Cf. main beam n. (b) at main, adj.2… main beam1964 (a) Building a principal beam which transmits a load directly to a column or wall (in quot. 1657 with reference to a ship); (b) British the… |
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