STARTING a.
from Start, v. Starting bar (Steam Eng.), a hand lever for working the values in starting an engine. -- Starting hole, a loophole; evasion. [Obs.] -- Starting point, the point from which motion begins, or from which anything starts. -- Starting post, a post, stake, barrier, or place from which competitors in a race s…
TAPPET n.
A lever or projection moved by some other piece, as a cam, or intended to tap or touch something else, with a view to produce change or regulate motion. G. Francis. Tappet motion, a valve motion worked by tappets from a reciprocating part, without an eccentric or cam, -- used in steam pumps, etc.