clock

中文： 钟、时钟、钟表

1. Any device or mechanism that enables time to be measured or regulated. (countable, uncountable) · A sundial is a type of clock that measures time through the movement of the sun's shadow.· Radioactive decay acts as a geological clock, revealing the age of the rock.
2. In particular, a mechanical or electronic device that indicates the time of day through hands or a numeric display, and sometimes also through chimes. (countable, uncountable)
3. A time clock. (countable, uncountable) · I can't go off to lunch yet: I'm still on the clock.· We let the guys use the shop's tools and equipment for their own projects as long as they're off the clock.
4. An electrical signal that synchronizes timing among digital circuits of semiconductor chips or modules. (countable, uncountable)
5. A CPU clock cycle, or T-state. (countable, informal, uncountable)
6. A common noun relating to an instrument that measures or keeps track of time. (countable, uncountable) · A 12-hour clock system; an antique clock sale; Acme is a clock manufacturer.
7. The seed head of a dandelion. (countable, uncountable)
8. A luck-based patience or solitaire card game with the cards laid out to represent the face of a clock. (uncountable)

复数 clocks