n.

1. 时钟[C]
   The clock struck ten.

   时钟敲响十点。

2. 【口】（汽车等的）里程计；（车辆的）速度计[the S]

vt.

1. 为……计时；测（赛跑者等的）时间
   The racing car was clocked at 160 miles p.h.

   该赛车的时速为一百六十英里。

2. 【口】（用机械装置）记录（时间、速度等）
3. 【英】【俚】打；打击

vi.

1. 打卡[（+in/on/out/off）]
   He clocked in late yesterday.

   他昨天（打卡）上班迟到了。

n.

1. an instrument that measures and indicates the time by means of a dial or a digital display.
   ▸informal a measuring device resembling a clock, such as a speedometer.
2. (also dandelion clock) Brit. the downy spherical seed head of a dandelion. [from the child's game of blowing away the seeds to find out what time it is.]
3. Brit. informal a person's face.

v.

1. attain or register (a specified time, distance, or speed).
   ▸achieve (a victory):

   he clocked up his first win of the year.
2. (clock in/out or Brit. on/off) register one's arrival at or departure from work by means of an automatic recording clock.
3. Brit. informal notice or watch.
4. informal, chiefly Brit. hit on the head.
5. Brit. informal illegally wind back the milometer of (a car).

n.