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Comprehensive
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crank a mechanical device for applying rotary motion, consisting of a lever arm or disk attached at right angles to the end of a rotating shaft and turned by hand or connecting rod. [1/6 definitions]
crankpin a bar or cylindrical pin positioned in a crank and having a connecting rod or link attached.
cylinder head of the cylinder in an internal-combustion engine, the closed, often detachable end opposite to that from which the piston or connecting rod projects.
dead center the maximum or minimum extension of a crank and connecting rod in a reciprocating engine, in which both are in a straight line and the connecting rod cannot turn the crank. [1/2 definitions]
pitman a type of connecting rod, used esp. in steering systems, that transforms motion around an axis into linear motion. [1/2 definitions]
tappet in an engine or machine, a connecting rod moved by a cam so as to cause movement in another part such as a valve.
wrist pin a pin that joins the end of a connecting rod to a piston, wheel, or the like.