tapper

plural tappers

1. One who makes a tapping noise.

   A low tap was heard at the room door. Mr. Bob Sawyer looked expressively at his friend, and bade the tapper come in[…]

   1836 March – 1837 October, Charles Dickens, “(please specify the chapter name)”, in The Posthumous Papers of the Pickwick Club, London: Chapman and Hall, […], published 1837, →OCLC

2. A tap-dancer.
3. A wiretapper.
4. slangball gamesA weakly hit ground ball.
5. communicationsIn early wireless telegraphs, a device used to shake loose the filings of a coherer.
6. UKdialectalThe lesser spotted woodpecker.
7. USA tapster.
8. hobbiesAn assistant in the sport of paraswimming who taps blind or visually impaired swimmers with a pole to indicate when they should turn around.

plural Tappers

1. A surname originating as an occupation for an innkeeper or wine merchant.