cour·te·san (kôr'tĭ-zən, kōr'-) n. A woman prostitute, especially one whose clients are members of a royal court or men of high social standing.
[French courtisane, from Old French, from Old Italian cortigiana, feminine of cortigiano, courtier, from corte, court, from Latin cohors, cohort-; see gher-1 in Indo-European roots.]
1549, from M.Fr. courtisane, from It. cortigiana "prostitute," lit. "woman of the court," fem. of cortigiano "one attached to a court," from corte "court," from L. cortem (see court).