eleven o'clock

noun4

1. •
   The start of the twelfth hour of the day; 11:00 a.m. (11:00).

   • Breakfast service ends at eleven o'clock (= "Breakfast service ends at 11:00 a.m.").
2. •
   The start of the twenty-fourth hour of the day; 11:00 p.m. (23:00).

   • Supper service ends at eleven o'clock (= "Supper service ends at 11:00 p.m.").
3. •
   A position ahead and slightly to the left (horizontal clock orientation) (from the location of the 11 mark on a clock face)

   • We've got a bogey at eleven o'clock.
4. •
   Moss-rose purslane, a flowering plant of species Portulaca grandiflora