1 1 /wʌn/

adjective

1. () Used of a single unit or thing; not two or more  ( ane [Dialect, UK] , i , 1 , one )
   used of a single unit or thing; not two or more
    Ane' is Scottish
   ane' is Scottish
   

noun

1. () The smallest whole number or a numeral representing this number  ( I , single , unity , ace , 1 , one )
   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
   he has the one but will need a two and three to go with it
    They had lunch at one
   they had lunch at one