rod

nouns

a long thin implement made of metal or wood
rod
is a type of (narrower)
instrumentation (a piece of equipment or tool) used to effect an end
implement
any rod-shaped bacterium
rod
is a type of (narrower)
(microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants
bacteria, bacterium
a linear measure of 16.5 feet
perch, pole, rod
a square rod of land
perch, pole, rod
a visual receptor cell that is sensitive to dim light
retinal rod, rod, rod cell
a gangster's pistol
gat, rod