Date definition is - the brown, oblong edible fruit of a palm (Phoenix dactylifera). How to use date in a sentence. Did You Know?. Date definition, a particular month, day, and year at which some event happened or will happen: July 4, was the date of the signing of the Declaration of. Date definition: A date is a specific time that can be named, for example a particular day or a | Meaning, pronunciation, translations and examples.