equivalent to the sum of one and two; one more than two; 3:her three childrena crew of threea three-bedroom houseall three of them are buried there (Roman numeral: iii or III)
a group or unit of three people or things:students clustered in twos or threes
three years old:she is only three
three o’clock:I’ll come at three
a size of garment or other merchandise denoted by three.