waistcoateer

from The Collaborative International Dictionary of English v.0.48

Waistcoateer \Waist`coat*eer"\, n.
   One wearing a waistcoat; esp., a woman wearing one uncovered,
   or thought fit for such a habit; hence, a loose woman;
   strumpet. [Obs.]
   [1913 Webster]

         Do you think you are here, sir,
         Amongst your waistcoateers, your base wenches? --Beau.
                                                  & Fl.
   [1913 Webster]