Renshaw cell

noun

Ren·​shaw cell ˈren-ˌshȯ- 

: an inhibitory interneuron in the ventral horn of gray matter of the spinal cord that is held to be reciprocally innervated with a motor neuron so that nerve impulses received by way of processes of the motor neuron stimulate inhibitory impulses back to the motor neuron along an axon of the internuncial cell