Wiktionary
n. The start of the eleventh hour of the day in both the 12-hour and the 24-hour clock; 10:00.
Usage examples of "ten o'clock".
It was not even ten o'clock, and the main street of Colgate was streaming with traffic, car stereos thumping.
I'd planned to be at the county home at ten o'clock sharp, but Harve had called and I'd related everything that happened the previous evening.
Thomas, the landlady, and it was nearly ten o'clock before I made my way up to my own bath and nightgown.
The week before Thanksgiving, Graice is downstairs in the kitchen at about ten o'clock in the evening there's another roomer there, making coffee, a mild mannered white man in economics named Hodler and in comes the Jamaican smelling of beer and perspiration, blustery, aggressive, all smiles.
We spoke of the weather and so forth, and I steadily avoided the topic of the Fordwych Castle tragedy until the return of Lady Molly at about ten o'clock.
To-night at ten o'clock I will meet you at the half-way house which stands in the hamlet of Bennebrock at the cross-roads where a signpost points the way to Leyden.
I mean, ten o'clock is ten o'clock--there's no need to get cute.
Once again, I tell her it's because I need some specialist books from the library, and she shrugs, only half-believing, and by ten o'clock, I'm on the doorstep again, rejecting the same groceries.