know what's o'clock
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English[edit]
Verb[edit]
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)
- (dated) Synonym of know what is what
References[edit]
- John Camden Hotten (1873) The Slang Dictionary