1 meaning and definition

1 noun

Definition of 1 (noun)

1. the smallest whole number or a numeral representing this number
   • "he has the one but will need a two and three to go with it"; "they had lunch at one"
   • synonyms: ace, I, one, single, unity

1 adjective

Definition of 1 (adjective)

1. used of a single unit or thing; not two or more
   • "`ane' is Scottish"
   • synonyms: ane, i, one