| 单词 | lag |
| 释义 | lag 1. v. & n. --vintr. (lagged, lagging) 1. (often foll. by behind) fall behind; not keep pace. 2. US Billiards make the preliminary strokes that decide which player shall begin. --n 1. a delay. 2. Physics a retardation in a current or movement. b the amount of this. Phrases and idioms lag of tide the interval by which a tide falls behind mean time at the 1st and 3rd quarters of the moon (cf. PRIMING(2)). Derivatives lagger n. Etymology: orig. = hindmost person, hang back: perh. f. a fanciful distortion of LAST(1) in a children's game (fog, seg, lag, = 1st, 2nd, last, in dial.) 2. v. & n. --vtr. (lagged, lagging) enclose or cover in lagging. --n 1. the non-heat-conducting cover of a boiler etc.; lagging. 2. a piece of this. Etymology: prob. f. Scand.: cf. ON l{ouml}gg barrel-rim, rel. to LAY(1) 3. n. & v. sl. --n (esp. as old lag) a habitual convict. --vtr. (lagged, lagging) 1. send to prison. 2. apprehend; arrest. Etymology: 19th c.: orig. unkn. |
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