Webster's Revised Unabridged Dictionary · 1913

nervy

nervy (nẽrv"y) , adjective

1.
Strong; sinewy.
His nervy knees. — Keats
2.
Offensively bold or presumptuous; insolent; cheeky; pushy.
3.
Exhibiting courage or daring; bold; plucky.
4.
Nervous{6}; apprehensive; edgy{1}.