waistcoateer

from The Century Dictionary.

• noun One who wears a waistcoat as a principal garment, without a coat or upper gown; in the seventeenth and eighteenth centuries, in London, a prostitute (probably from being so dressed).

from the GNU version of the Collaborative International Dictionary of English.

• noun obsolete One wearing a waistcoat; esp., a woman wearing one uncovered, or thought fit for such a habit; hence, a loose woman; strumpet.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun obsolete One wearing a waistcoat; especially, a woman wearing one uncovered, or thought fit for such a habit; hence, a loose woman; strumpet.