Final answer:
A connecting rod is a component of the internal combustion engine that connects the piston to the crankshaft, converting the reciprocating motion of the piston into rotary motion of the crankshaft.
Step-by-step explanation:
A connecting rod is a component of the internal combustion engine. It connects the piston to the crankshaft and converts the reciprocating motion of the piston into rotary motion of the crankshaft. The connecting rod plays a crucial role in transferring the power generated by the combustion process to the crankshaft, which then drives the vehicle or machinery.