| clock golf | a form of golf in which you putt from positions arranged on the circumference of a circle around the hole |
alarm clock
alarm | a clock that wakes a sleeper at some preset time |
| ammonia clock | an atomic clock based on vibrational frequency of the nitrogen atom in the ammonia molecule |
| analog clock | a clock that displays the time of day by the position of hands on a dial |
| atomic clock | a timepiece that derives its time scale from the vibration of atoms or molecules |
| ballistic pendulum | a physical pendulum consisting of a large mass suspended from a rod, when it is struck by a projectile its displacement is used to measure the projectile's velocity |
| caesium clock | an atomic clock based on the energy difference between two states of the caesium nucleus in a magnetic field |
| clock | a timepiece that shows the time of day |
clock face
clock dial | the face of a clock showing hours and minutes of the day |
| clock pendulum | a physical pendulum used to regulate a clockwork mechanism |
| clock radio | a radio that includes a clock that can be set to turn it on automatically |
| clock tower | a tower with a large clock visible high up on an outside face |
| cuckoo clock | clock that announces the hours with a sound like the call of the cuckoo |
| digital clock | a clock that displays the time of day digitally |
| electric clock | a clock using a small electric motor |
| Foucault pendulum | pendulum with a long wire, can swing in any direction, the change in the swing plane demonstrates the earth's rotation |
grandfather clock
longcase clock | a pendulum clock enclosed in a tall narrow case |
| gun pendulum | a ballistic pendulum consisting of a suspended gun, the velocity of a projectile in the bore of a gun can be measured by the recoil when the gun is discharged |
Napier's bones
Napier's rods | a set of graduated rods formerly used to do multiplication and division by a method invented by John Napier |
| pendulum | an apparatus consisting of an object mounted so that it swings freely under the influence of gravity |
| pendulum clock | a clock regulated by a pendulum |
| pendulum watch | (th century) a watch with a balance wheel having a fake pendulum attached to it |
physical pendulum
compound pendulum | pendulum consisting of an actual object allowed to rotate freely around a horizontal axis |
| simple pendulum | a hypothetical pendulum suspended by a weightless frictionless thread of constant length |
| system clock | an electronic device in a computer that issues a steady high-frequency signal that synchronizes all the internal components |
| system clock | a time-of-day clock in a computer system |
| time clock | clock used to record the hours that people work |
| turret clock | a clock with more than one dial to show the time in all directions from a tower |
| verge | a grass border along a road |
| wall clock | a clock mounted on a wall |
water clock
clepsydra
water glass | clock that measures time by the escape of water |
verge
brink | the limit beyond which something happens or changes, on the verge of tears, on the brink of bankruptcy |
| clock-watching | paying excessive attention to the clock (in anticipation of stopping work) |
scepter
sceptre
verge
wand | a ceremonial or emblematic staff |
| clock watcher | a worker preoccupied with the arrival of quitting time |
Nyctaginaceae
family Nyctaginaceae
Allioniaceae
family Allioniaceae
four-o'clock family | a family of flowering plants of the order Caryophyllales |
trailing four o'clock
trailing windmills
Allionia incarnata | trailing plant having crowded clusters of brilliant deep pink flowers resembling a single flower blooming near the ground, found in dry gravelly or sandy soil, southwestern United States and Mexico |
| four o'clock | any of several plants of the genus Mirabilis having flowers that open in late afternoon |
common four-o'clock
marvel-of-Peru
Mirabilis jalapa
Mirabilis uniflora | common garden plant of North America having fragrant red or purple or yellow or white flowers that open in late afternoon |
California four o'clock
Mirabilis laevis
Mirabilis californica | California four o'clock with purpleed flowers |
sweet four o'clock
maravilla Mirabilis longiflora | leafy wildflower having fragrant slender white or pale pink trumpet-shaped flowers, southwestern United States and northern Mexico |
desert four o'clock
Colorado four o'clock
maravilla Mirabilis multiflora | wildflower having vibrant deep pink tubular evening-blooming flowers, found in sandy and desert areas from southern California to southern Colorado and into Mexico |
mountain four o'clock
Mirabilis oblongifolia | leafy wildflower with lavender-pink flowers that open in the evening and remain through cool part of the next day, found in open woods or brush in mountains of southern Colorado to Arizona and into Mexico |
meadow salsify
goatsbeard
shepherd's clock
Tragopogon pratensis | weedy European annual with yellow flowers, naturalized in United States |
| ribbon fern Ophioglossum pendulum | epiphytic fern with straplike usually twisted fronds of tropical Asia and Polynesia and America |
brink
threshold
verge | a region marking a boundary |
clock time
time | a reading of a point in time as given by a clock, do you know what time it is?, the time iso'clock |
spacecraft clock time
SCLK | the clock time given by a clock carried on board a spacecraft |
| biological clock | an innate mechanism in living organisms that controls the periodicity of many physiological functions |
clock
time | measure the time or duration of an event or action or the person who performs an action in a certain period of time, he clocked the runners |