Noun

• 1. a tavern keeper who taps kegs or casks

• 2. a person who strikes a surface lightly and usually repeatedly;

  "finger tappers irritated her"

• 3. a worker who uses a tap to cut screw threads

• 4. someone who wiretaps a telephone or telegraph wire

• 5. a dancer who who sounds out rhythms by using metal taps on the toes and heels of the shoes