know what's o'clock

English

Etymology

Compare Dutch weten hoe laat het is.

Verb

know what's o'clock (third-person singular simple present knows what's o'clock, present participle knowing what's o'clock, simple past knew what's o'clock, past participle known what's o'clock)

  1. (dated) Synonym of know what is what.

References

  • John Camden Hotten (1873) The Slang Dictionary