Webster's Revised Unabridged Dictionary · 1913

Waistcoateer

Waistcoateer , noun

One wearing a waistcoat; esp., a woman wearing one uncovered, or thought fit for such a habit; hence, a loose woman; strumpet. [Obsolete]
Do you think you are here, sir, Amongst your waistcoateers, your base wenches? — Beau. & Fl