English Dictionary

five o'clock

noun

(In both the 12-hour clock and the 24-hour clock) The start of the sixth hour of the day; 5:00 a.m. (05:00). / (Only in the 12-hour clock) The start of the eighteenth hour of the day; 5:00 p.m. (17:00).

I always leave work at five o'clock.

意味（1）

(In both the 12-hour clock and the 24-hour clock) The start of the sixth hour of the day; 5:00 a.m. (05:00).

The breakfast buffet opens at five o'clock (= The breakfast buffet opens at 5:00 a.m.).

意味（2）

(Only in the 12-hour clock) The start of the eighteenth hour of the day; 5:00 p.m. (17:00).

The next train comes at five o'clock (= The next train comes at 17:00).

意味（3）

(informal) A position behind and slightly to the right (horizontal clock orientation) (from the location of the 5 mark on a clock face)

We've got a bogey at five o'clock.