The Collaborative International Dictionary of English v.0.48:

Stance \Stance\ (st[a^]ns), n. [OF. estance. See Stanza.]
   1. A stanza. [Obs.] --Chapman.
      [1913 Webster]

   2. A station; a position; a site. [Scot.] --Sir W. Scott.
      [1913 Webster]

   3. (Golf, Baseball) The position of a player's feet, relative
      to each other and to the ball, when he is making a stroke
      or at bat.
      [Webster 1913 Suppl. +PJC]

   4. the mental attitude, position, or approach a person adopts
      in respect to something.
      [PJC]

WordNet (r) 3.0 (2006):

stance
    n 1: standing posture
    2: a rationalized mental attitude [syn: position, stance,
       posture]