The Collaborative International Dictionary of English v.0.48:

Zander \Zan"der\, n. [Cf. D. zand sand.] (Zool.)
   A European pike perch (Stizostedion lucioperca) allied to
   the wall-eye; -- called also sandari, sander, sannat,
   schill, and zant.
   [1913 Webster]

WordNet (r) 3.0 (2006):

sander
    n 1: a power tool used for sanding wood; an endless loop of
         sandpaper is moved at high speed by an electric motor [syn:
         drum sander, electric sander, sander, smoother]