a thin straight bar, especially of wood or metal

concrete walls reinforced with steel rods

a curtain rod

a fishing rod

he hooked an enormous fish which almost pulled the rod from out of his hands

the largest carp ever caught on rod and line in Britain

a pistol or revolver

a light-sensitive cell of one of the two types present in large numbers in the retina of the eye, responsible mainly for monochrome vision in poor light