n (1)滴嗒声(尤指钟表的)(regular sound，esp that of a watch，clock，etc)[C]：hear the～of the clock 听见钟表的滴嗒声;〖同〗click，clack，tap;

(2)核对账目的记号(small dot，mark，or check，as used to mark off an item on a list)[C]：put a～by sb's name/each item 在某人名字/每个条款的旁边打一个勾(√);〖同〗 check，mark，line，dot;

(3)一刹那(瞬间)(moment or instant)[C]：wait a～稍等一下;in a～马上;half a～过一会儿;in two～s 马上;in a couple of～s 一会儿;〖同〗moment;

v (1)滴滴嗒嗒响(指钟表)(produce a series of ticks)[I，I+adv (away);T+n+adv]：The watch/clock～s. 手表/钟表滴滴嗒嗒地响着。leave the taxi's meter～ing away 任出租车的计程表滴嗒地响着;～away/by (指时间)(随着时钟的响声)过去;～sth away (指时钟)让时间滴滴嗒嗒地过去;My watch～ed away another five minutes. 我的表又滴滴嗒嗒地过去了五分钟。not understand what makes sb～不明白某人做事的动机;〖同〗beat，swing;

(2)打上记号(put the mark beside an item or name on a list，etc)[T+n，T+n+adv(off)]：～the names of those absent 在那些缺席人的名字旁边打个记号;～off the items one by one/on the memo/on the list 逐项/把备忘录上的项目/把表格上的项目用记号标出;Those two jobs that I've done can be～ed off. 可以在我已完成的那两项工作的旁边打上勾了。〖同〗check，mark，note，list;

tick off (v adv) 1)责备，斥责(vt)：She～ed me off for being late again. 她责备我又迟到了。2)使某人生气(vt)：Her rudeness really～ed me off. 她的无礼使我很生气。

tick over (v adv) 1)(指发动机)慢慢空转着(vi)：The car's engine is～ing over. 汽车的发动机正慢慢空转着。2)(指活动)照常进行，顺利进行(vi)：Our sales are～ing over nicely at the moment. 目前我们的销售进行得非常顺利。

→͵ticking-′off n 斥责，责备;′tick-tack n 赛马场上赌注登记员所做的一套手势信号;͵tick-′tock n 大时钟发出的滴嗒声