Synonyms for Tapper (same or very similar meaning)
WordNet sense 1 (a tavern keeper who taps kegs or casks):
tapster
WordNet sense 2 (someone who wiretaps a telephone or telegraph wire):
wiretapper, phone tapper
WordNet sense 3 (a dancer who sounds out rhythms by using metal taps on the toes and heels of the shoes):
tap dancer
From the ODE community, based on WordNet
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