The Collaborative International Dictionary of English v.0.48:

Shovelboard \Shov"el*board`\, n.
   1. A board on which a game is played, by pushing or driving
      pieces of metal or money to reach certain marks; also, the
      game itself. Called also shuffleboard, shoveboard,
      shovegroat, shovelpenny.
      [1913 Webster]

   2. A game played on board ship in which the aim is to shove
      or drive with a cue wooden disks into divisions chalked on
      the deck; -- called also shuffleboard.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shuffleboard \Shuf"fle*board`\, n.
   See Shovelboard.
   [1913 Webster]

WordNet (r) 3.0 (2006):

shuffleboard
    n 1: a game in which players use long sticks to shove wooden
         disks onto the scoring area marked on a smooth surface
         [syn: shuffleboard, shovelboard]