oclock
ˈoʊ.kloʊk
Definitions
1. noun
The correct time as indicated by a clock; a particular hour or half hour.
“The meeting will be at 3 o’clock.”
2. preposition
At a specified time of day indicated by a clock.
“I’ll see you at half past 5 o’clock.”
3. conjunction
Used to indicate a connection between two times, especially when one is immediately after the other.
“I’ll meet you at 5 o’clock, and then we’ll go out.”