Grandfather, pendulum, digital

noun

1. A device other than a watch for indicating or measuring time commonly by means of hands moving on a dial
2. A registering device usually with a dial
3. Time clock
4. A synchronizing device (as in a computer) that produces pulses at regular intervals
5. Biological clock

verb

1. To time with a stopwatch or by an electric timing device
2. To be timed at
3. To register on a mechanical recording device

   "wind velocities were clocked at 80 miles per hour"

4. To hit hard
5. Attain, realize
6. To travel (a distance) over time

   "clocks more than 15,000 miles a year on business"

7. Put in

   "clocking long hours at the office"

8. To have a specified duration or speed
9. To register on a time sheet or time clock punch

noun

1. An ornamental figure on the ankle or side of a stocking or sock

noun

1. A combination clock and radio device in which the clock can be set to turn on the radio at a designated time

noun

1. A person (such as a worker or student) who keeps close watch on the passage of time

phrasal verb

1. To record on a special card the time that one stops working

   "What time did you clock off yesterday?"

phrasal verb

1. To gain or reach (a particular number or amount)

   "Our company clocked up a record number of sales this year."

noun

1. A clock that can be set to sound an alarm at a desired time

adjective

1. Being in effect, continuing, or lasting 24 hours a day constant

   "around-the-clock surveillance"

noun

1. A precision clock that depends for its operation on an electrical oscillator regulated by the natural vibration frequencies of an atomic system (such as a beam of cesium atoms)