a person who strikes a surface lightly and usually repeatedly
Finger tappers irritated her.
source: WordNet 3.0
a worker who uses a tap to cut screw threads
source: WordNet 3.0
someone who wiretaps a telephone or telegraph wire
source: WordNet 3.0
a dancer who sounds out rhythms by using metal taps on the toes and heels of the shoes
source: WordNet 3.0
The lesser spotted woodpecker (Dendrocopus minor); -- called also tapperer, tabberer, little wood pie, barred woodpecker, wood tapper, hickwall, and pump borer.