noun Etymology: irregular from 3tap Date: 1745 a lever or projection moved by some other piece (as a cam) or intended to tap or touch something else to cause a particular motion
TAPPET
Meaning of TAPPET in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012