Source : Webster's Revised Unabridged Dictionary (1913)

Tapper \Tap"per\, n. (Zo["o]l.)
   The lesser spotted woodpecker ({Dendrocopus minor}); --
   called also {tapperer}, {tabberer}, {little wood pie},
   {barred woodpecker}, {wood tapper}, {hickwall}, and {pump
   borer}. [Prov. Eng.]