Duchess
来自Big Physics
late Middle English: via Old French from medieval Latin ducissa, from Latin dux, duc- (see duke).
wiktionary
From Middle English duchesse, from Old French duchesse.
etymonline
duchess (n.)
"female sovereign of a duchy; consort or widow of a duke," c. 1300, from Old French duchesse, from Late Latin or Medieval Latin ducissa, fem. of dux "duke" (see duke (n.)). Often spelled dutchess until early 19c. (as in Dutchess County, New York, U.S.).
