Source : Webster's Revised Unabridged Dictionary (1913)

Sidewise \Side"wise`\, adv.
   On or toward one side; laterally; sideways.

         I saw them mask their awful glance Sidewise meek in
         gossamer lids.                           --Emerson.

Source : WordNet®

sidewise
     adv 1: toward one side; "the car slipped sideways into the ditch";
            "leaning sideways"; "a figure moving sidewise in the
            shadows" [syn: {sideways}, {sideway}]
     2: with one side forward or to the front; "turned sideways to
        show the profile"; "crabs seeming to walk sidewise" [syn:
        {sideways}, {sideway}]
     3: from the side; obliquely; "a picture lit sideways"; "scenes
        viewed sidewise" [syn: {sideway}, {sideways}]