lorette, n. — Green’s Dictionary of Slang

lorette n.

[borrowing of Fr. lorette, smart young kept women, living on or around rue Notre de Dame de Lorette, Paris IXeme ]

a prostitute.

[1885		L. Emanuel Jottings [...] of a Bengal ‘qui hye’ 220: The gay, glittering ‘cocottes’ and ‘lorettes’ of the Boulevards [...] of Paris.
1909		J. Ware Passing Eng. of the Victorian Era 154/2: Horizontal (Anglo-Fr., 1886). Lorette.
1941		D. Burley N.Y. Amsterdam Star-News 13 Sept. 15: The place is jammed with chippies and [...] lorettes and filles de joie and chicks on the wrong side.