Skip to definition.  Noun: motor nerve fiber Usage: US
(elsewhere: motor nerve fibre)   1. A neuron conducting impulses
outwards from the brain or spinal cord     - motor neuron,
efferent neuron, motoneuron, motor nerve fibre [Brit, Cdn]
Derived forms: motor nerve fibers  Type of: nerve cell, neuron,
neurone  Part of: efferent, efferent nerve, motor nerve