oh dark thirty

English dictionary entry

Meanings

noun
  1. Some unspecified hour in the early morning (implying an unpleasant time to be awake).

Pronunciation

En-au-oh dark thirty.ogg

Word forms

oh dark thirty 0-dark-thirty oh-dark-thirty zero dark thirty dark thirty

Etymology

From U.S. military terminology, in which hours before 10:00 am are prefixed with a zero, read as "oh", as in 0530, oh five-thirty, for 5:30 am.

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