(idiomatic) To annoy or irritate someone; to bother someone.

(neuroanatomy) One of the divisions of the autonomic nervous system, based between the brain and the spinal cord, that slows the heart and relaxes muscles.

plural of central nervous system

plural of nervous system

(neuroanatomy) The part of the autonomic nervous system that raises blood pressure and heart rate, constricts blood vessels, and dilates the pupils when under stress.

the quality of being nerdy

Lacking nerve: fearful; cowardly. / (biology) Lacking a nervous system. / Devoid of nerves: calm, controlled, cool under pressure.

(US) Having nerve; bold; brazen. / (Britain) Feeling nervous, anxious or agitated. / (archaic) Strong; sinewy. / (technical) jittery; having unwanted signal characteristics.

(anatomy) An axon

plural of nerve fibre