| Definition/Meaning | Word/Phrase |
|---|
| bedroom clock |
alarm
|
| clock that wakes sleeper at preset time |
alarm
,
alarm clock
|
| atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule |
ammonia clock
|
| clock with hand and dial display |
analog
|
| clock that displays the time of day by the position of hands on a dial |
analog clock
|
| (nautical) each of the eight half-hour units of nautical time signaled by strokes of a ship's bell; eight bells signals 4:00, 8:00, or 12:00 o'clock, either a.m. or p.m. |
bell
,
ship's bell
|
| clock in the clock tower of the Houses of Parliament, London |
Big Ben
|
| atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field |
caesium clock
|
| California four o'clock with purple-red flowers |
California four o'clock
,
Mirabilis californica
,
Mirabilis laevis
|
| atomic clock that defines the second |
cesium atomic clock
|
| clock, subatomic accurate |
cesium clock
|
| accurate clock (especially used in navigation) |
chronometer
|
| clock, precision |
chronometer
|
| clock with dripping water, ancient |
clepsydra
|
| clock that measures time by the escape of water |
clepsydra
,
water clock
,
water glass
|
| face of a clock showing hours and minutes of the day |
clock dial
,
clock face
|
| radio that includes a clock that can be set to turn it on automatically |
clock radio
|
| time as given by a clock |
clock time
,
time
|
| tower with a large clock visible high up on an outside face |
clock tower
|
| paying excessive attention to the clock (in anticipation of stopping work) |
clock-watching
|
