Rod

A straight and slender stick; a wand; hence, any slender bar, as of wood or metal (applied to various purposes).

An instrument of punishment or correction; figuratively, chastisement.

A kind of sceptor, or badge of office; hence, figuratively, power; authority; tyranny; oppression.

A support for a fishing line; a fish pole.

A member used in tension, as for sustaining a suspended weight, or in tension and compression, as for transmitting reciprocating motion, etc.; a connecting bar.

An instrument for measuring.

A measure of length containing sixteen and a half feet; -- called also perch, and pole.

any rod-shaped bacterium

a visual receptor cell that is sensitive to dim light