The Collaborative International Dictionary of English v.0.48:

Polling \Poll"ing\, n. [See Poll the head.]
   1. The act of topping, lopping, or cropping, as trees or
      hedges.
      [1913 Webster]

   2. Plunder, or extortion. [Obs.] --E. Hall.
      [1913 Webster]

   3. The act of voting, or of registering a vote.
      [1913 Webster]

   Polling booth, a temporary structure where the voting at an
      election is done; a polling place.
      [1913 Webster]

WordNet (r) 3.0 (2006):

polling booth
    n 1: a temporary booth in a polling place which people enter to
         cast their votes