Piste

from WordNet (r) 3.0 (2006)

piste
    n 1: a flat rectangular area for fencing bouts
    2: a ski run densely packed with snow

from The Collaborative International Dictionary of English v.0.48

Piste \Piste\, n. [F., fr. L. pisere, pinsere, pistum, to
   pound.] (Min.)
   The track or tread a horseman makes upon the ground he goes
   over. --Johnson.
   [1913 Webster] Pistel