The Collaborative International Dictionary of English v.0.48:
Fichu \Fich"u\, n. [F., neckerchief.] A light cape, usually of lace, worn by women, to cover the neck and throat, and extending to the shoulders. [1913 Webster]WordNet (r) 3.0 (2006):
fichu n 1: a lightweight triangular scarf worn by a woman