four o'clock

Definitions

1. The start of the fifth hour of the day; 4:00 a.m. (04:00).
   uncountable
2. The start of the seventeenth hour of the day; 4:00 p.m. (16:00).
   uncountable
3. A position to the right and slightly behind (horizontal clock orientation) (from the location of the 4 mark on a clock face)
   informal, uncountable
4. Any of several plants, of the genus Mirabilis, whose funnel-shaped flowers open in late afternoon.
   uncountable
5. The friarbirds (Philemon spp.); so called from its cry, which resembles these words.
   uncountable

Equivalents

Examples

“The breakfast buffet opens at four o'clock (= "The breakfast buffet opens at 4:00 a.m.").”

“The next train⟳ comes at four o'clock (= "The next train⟳ comes at 16:00").”

“We've got a bogey at four o'clock.”

CEFR level