o'·clock | \ ə-ˈkläk 
, ō- \
, ō- \Definition of o'clock
1 : according to the clock
the time is three o'clock
2 —used for indicating position or direction as if on a clock dial that is oriented vertically or horizontallyan airplane approaching at six o'clock
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More Definitions for o'clock
o'clock
adverbEnglish Language Learners Definition of o'clock
: according to the clock
See the full definition for o'clock in the English Language Learners Dictionary
o'clock
adverbo'·clock | \ ə-ˈkläk \
\Kids Definition of o'clock
: according to the clock
The time is one o'clock.
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Time Traveler for o'clock
The first known use of o'clock was in 1535
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