1 meaning

UK US

1 (adjective): used of a single unit or thing; not two or more.

1 has 2 meanings in this dictionary, as adjective and noun.

1 as an adjective

  1. used of a single unit or thing; not two or more
    • `ane' is Scottish

    Synonyms: one, i, ane

    Similar: cardinal

1 as a 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: one, I, ace, single, unity

    Type of: digit

    Kinds: monad, singleton

More about 1 on Wikipedia.