fiber or bundle of fibers carrying impulses of sensation or of movement between the brain and all parts of the body
condition in which one is very nervous, irritable, worried, etc.; nervousness
impudence (used especially as in the expressions shown)
"he kept fighting on pure spunk"
"you haven't got the heart for baseball"
"I couldn't believe her boldness"
"he had the effrontery to question my honesty"
Prosperity had relaxed the nerves of discipline.
He nerved their limbs With vigor ever new.
出自： W. C. Bryant