DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   at least
       adv 1: if nothing else (`leastwise' is informal and `leastways'
              is colloquial); "at least he survived"; "they felt--at
              any rate Jim felt--relieved though still wary"; "the
              influence of economists--or at any rate of economics--is
              far-reaching" [syn: at least, leastways, leastwise,
              at any rate]
       2: not less than; "at least two hours studying the manual"; "a
          tumor at least as big as an orange" [syn: at least, at the
    least] [ant: at most, at the most]