free nerve ending

English Thesaurus

1. microscopic sensory nerve endings in the skin that are not connected to any specific sensory receptor (noun.body)

hypernym	:	nerve end, nerve ending,
definition	:	the terminal structure of an axon that does not end at a synapse (noun.body)

part meronym	:	cutis, skin, tegument,
definition	:	a natural protective body covering and site of the sense of touch (noun.body)