clock

1 [klok]
noun
1.
an instrument for measuring and recording time, especially by mechanical means, usually with hands or changing numbers to indicate the hour and minute: not designed to be worn or carried about.
3.
a meter or other device, as a speedometer or taximeter, for measuring and recording speed, distance covered, or other quantitative functioning.
5.
(initial capital letter) Astronomy. the constellation Horologium.
6.
Computers. the circuit in a digital computer that provides a common reference train of electronic pulses for all other circuits.
verb (used with object)
7.
to time, test, or determine by means of a clock or watch: The racehorse was clocked at two minutes thirty seconds.
8.
Slang. to strike sharply or heavily: Somebody clocked him on the face.
Verb phrases
9.
clock in, to begin work, especially by punching a time clock: She clocked in at 9 on the dot.
10.
clock out, to end work, especially by punching a time clock: He clocked out early yesterday.
Idioms
11.
around the clock,
a.
during all 24 hours; ceaselessly.
b.
without stopping for rest; tirelessly: working around the clock to stem the epidemic.
12.
clean (someone's) clock, to defeat; vanquish.
13.
kill the clock, Sports. to use up as much game time as possible when one is winning, as to protect a lead in basketball, ice hockey, or football. Also, run out the clock.
14.
stop the clock, to postpone an official or legal deadline by ceasing to count the hours that elapse, as when a new union contract must be agreed upon before an old contract runs out.

Origin:
1350–1400; Middle English clok(ke) < Middle Dutch clocke bell, clock; akin to Old English clucge, Old High German glocka (German Glocke), Old Irish clocc bell; cf. cloak

Dictionary.com Unabridged

clock

2 [klok]
noun
1.
a short embroidered or woven ornament on each side or on the outer side of a sock or stocking, extending from the ankle upward.
verb (used with object)
2.
to embroider with such an ornament.

Origin:
1520–30; origin uncertain

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
clock1 (klɒk)
 
n
1.  digital clock Compare watch a timepiece, usually free-standing, hanging, or built into a tower, having mechanically or electrically driven pointers that move constantly over a dial showing the numbers of the hours
2.  any clocklike device for recording or measuring, such as a taximeter or pressure gauge
3.  the downy head of a dandelion that has gone to seed
4.  an electrical circuit that generates pulses at a predetermined rate
5.  computing an electronic pulse generator that transmits streams of regular pulses to which various parts of the computer and its operations are synchronized
6.  short for time clock
7.  around the clock, round the clock all day and all night
8.  the clock speedometer an informal word for mileometer
9.  (Brit) a slang word for face
10.  against the clock
 a.  under pressure, as to meet a deadline
 b.  (in certain sports, such as show jumping) timed by a stop clock: the last round will be against the clock
11.  put the clock back to regress
 
vb
12.  slang (Brit), (Austral), (NZ) (tr) to strike, esp on the face or head
13.  slang (Brit) (tr) to see or notice
14.  (tr) to record time as with a stopwatch, esp in the calculation of speed
15.  electronics to feed a clock pulse to (a digital device) in order to cause it to switch to a new state
 
[C14: from Middle Dutch clocke clock, from Medieval Latin clocca bell, ultimately of Celtic origin]
 
'clocker1
 
n
 
'clocklike1
 
adj

clock2 (klɒk)
 
n
an ornamental design either woven in or embroidered on the side of a stocking
 
[C16: from Middle Dutch clocke, from Medieval Latin clocca bell]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

clock
1371, clokke, orig. "clock with bells," probably from M.Du. klocke, from M.L. (7c.) clocca "bell," from Celt., probably spread by Irish missionaries, ultimately of imitative origin. Replaced O.E. dægmæl, from dæg "day" + mæl "measure, mark." The slang verb sense of "hit, sock"
is 1941, originally Australian, probably from earlier slang clock (n.) "face" (1923). O'clock for of the clock is c.1720.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences for clocks
This need was a major motivation for the development of accurate mechanical clocks.
He also describes the construction of sundials and water clocks.
Synonyms
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