The Collaborative International Dictionary of English v.0.48:

Vis-a-vis \Vis`-a-vis"\, n. [F., opposite, face to face.]
   1. One who, or that which, is face to face with another;
      esp., one who faces another in dancing.
      [1913 Webster]

   2. A carriage in which two persons sit face to face. Also, a
      form of sofa with seats for two persons, so arranged that
      the occupants are face to face while sitting on opposite
      sides.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Vis-a-vis \Vis`-a-vis"\, adv.
   Face to face.
   [1913 Webster]

WordNet (r) 3.0 (2006):

vis-a-vis
    adv 1: face-to-face with; literally `face to face'; "they sat
           vis-a-vis at the table"; "I found myself vis-a-vis a
           burly policeman"
    n 1: a person or thing having the same function or
         characteristics as another [syn: counterpart, opposite
         number, vis-a-vis]
    2: small sofa that seats two people [syn: love seat,
       loveseat, tete-a-tete, vis-a-vis]