- Audacity, gall.
"He had the nerve to enter my house uninvited."
- (botany) A vein in a leaf; a grain in wood
"Some plants have ornamental value because of their contrasting nerves"
- Stamina, endurance, fortitude.
- (obsolete) Sinew, tendon.
- (nonstandard, colloquial) A neuron.
- (in the plural) Agitation caused by fear, stress or other negative emotion.
"Ellie had a bad case of nerves before the big test."
- (zoology) A bundle of neurons with their connective tissue sheaths, blood vessels and lymphatics.
"The nerves can be seen through the skin."
- Courage, boldness.
"He hasn't the nerve to tell her he likes her, what a wimp!"
- (transitive) To give courage; sometimes with "up".
"May their example nerve us to face the enemy."
- (transitive) To give strength
"The liquor nerved up several of the men after their icy march."