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The meaning of DAY is the time of light between one night and the next. How to use day in a sentence.

DAY definition: 1. a period of 24 hours, especially from twelve o'clock one night to twelve o'clock the next night…. Learn more.

31 meanings: 1. Also called: civil day the period of time, the calendar day, of 24 hours' duration reckoned from one midnight.... Click for more definitions.

Define day. day synonyms, day pronunciation, day translation, English dictionary definition of day. n. 1. The period of light between dawn and nightfall; the interval from sunrise to sunset. 2. a. …

DAY definition: the interval of light between two successive nights; the time between sunrise and sunset. See examples of day used in a sentence.

Definition of day noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.