'pump borer' definitions:

Definition of 'pump borer'

From: GCIDE

Tapper \Tap"per\, n. (Zool.) The lesser spotted woodpecker (Dendrocopus minor); -- called also tapperer, tabberer, little wood pie, barred woodpecker, wood tapper, hickwall, and {pump borer}. [Prov. Eng.] [1913 Webster]