Dictionary entry

Prowess

Webster's Dictionary 1913

Prow″ess (?), 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.