nine o'clock

uncountable informal

Japanese Meaning

午前9時 / 9時

I promised to meet her at nine o'clock by the bookstore.

私は本屋の前で彼女と9時に会うと約束した。

Sense（1）

The breakfast buffet opens at nine o'clock (= "The breakfast buffet opens at 9:00 a.m.").

Sense（2）

(Only in the 12-hour clock) The start of the twenty-second hour of the day; 9:00 p.m. (21:00).

Supper was served at nine o'clock (= "Supper was served at 9:00 p.m.").

Sense（3）

(informal) To the left (horizontal clock orientation) (from the location of the 9 mark on a clock face)

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