Nerve

n. 1 a fibre or bundle of fibres that transmits impulses of sensation or motion between the brain or spinal cord and other parts of the body. b material constituting these. 2 a coolness in danger; bravery. b cativo. impudence. 3 (in pl.) nervousness; mental or physical stress. v. (ving) 1 (usu. refl.) brace (oneself) to face danger etc. 2 give strength, vigour, or courage to. Ei get on a person’s nerves irritate a person. [Latin nerves sinew, bowstring]