Source : Webster's Revised Unabridged Dictionary (1913)

Atilt \A*tilt"\, adv. [Pref. a- + tilt.]
   1. In the manner of a tilter; in the position, or with the
      action, of one making a thrust. ``To run atilt at men.''
      --Hudibras.

   2. In the position of a cask tilted, or with one end raised.

   Note: [In this sense sometimes used as an adjective.]

               Abroach, atilt, and run Even to the lees of
               honor.                             --Beau. & Fl.

Source : WordNet®

atilt
     adj : departing or being caused to depart from the true vertical
           or horizontal; "the leaning tower of Pisa"; "the
           headstones were tilted" [syn: {canted}, {leaning}, {tilted},
            {tipped}]