Webster’s Revised Unabridged Dictionary · 1913
Prowess
Prow′ess (prou′ĕs), n. [OF. proece, proesce, F. prouesse. See Prow, a.] Distinguished bravery; valor; especially, military bravery and skill; gallantry; intrepidity; fearlessness. Chaucer. Sir P. Sidney.
He by his prowess conquered all France. Shak.