tapper

One that taps.

One who or that which operates a screw-cutting tap for threading holes.

A hammer for striking a bell or chime.

A device for restoring a coherer to its normal resistance, after this has been affected by electric oscillations, by means of a series of slight mechanical shocks.

One who taps or draws liquor; a tapster; specifically, an innkeeper.

One who or that which taps or strikes.

The lesser spotted woodpecker (Dendrocopus minor); — called also tapperer, tabberer, little wood pie, barred woodpecker, wood tapper, hickwall, and pump borer.

One who taps

A tap-dancer

A phone tapper or wiretapper