The Collaborative International Dictionary of English v.0.48:

Inward \In"ward\, Inwards \In"wards\, adv. [AS. inweard. The
   ending -s is prop. a genitive ending. See Inward, a.,
   -wards.]
   [1913 Webster]
   1. Toward the inside; toward the center or interior; as, to
      bend a thing inward.
      [1913 Webster]

   2. Into, or toward, the mind or thoughts; inwardly; as, to
      turn the attention inward.
      [1913 Webster]

            So much the rather, thou Celestial Light,
            Shine inward.                         --Milton.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Inwards \In"wards\, adv.
   See Inward.
   [1913 Webster]

WordNet (r) 3.0 (2006):

inwards
    adv 1: to or toward the inside of; "come in"; "smash in the
           door" [syn: in, inwards, inward]
    2: toward the center or interior; "move the needle further
       inwards!" [syn: inward, inwards] [ant: outward,
       outwards]