TAPPET
Meaning of TAPPET in English
/tap"it/ , n. Mach.
a sliding rod, intermittently struck by a cam, for moving another part, as a valve.
[ 1735-45; TAP 1 + -ET ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012