Source : Webster's Revised Unabridged Dictionary (1913)

Abut \A*but"\, v. i. [imp. & p. p. {Abutted}; p. pr. & vb. n.
   {Abutting}.] [OF. abouter, aboter; cf. F. aboutir, and also
   abuter; a (L. ad) + OF. boter, buter, to push: cf. F. bout
   end, and but end, purpose.]
   To project; to terminate or border; to be contiguous; to
   meet; -- with on, upon, or against; as, his land abuts on the
   road.

Source : WordNet®

abut
     v : lie adjacent to another or share a boundary; "Canada adjoins
         the U.S."; "England marches with Scotland" [syn: {border},
          {adjoin}, {edge}, {march}, {butt}, {butt against}, {butt
         on}]
     [also: {abutting}, {abutted}]