Green’s Dictionary of Slang

pieman n.¹

a lecher.

1654		Mercurius Fumigosus 19 4–11 Oct. 168: Build a row of Almshouses for decayed Py-men, or Py-Women, alleadging the Great Charter granted to the Py-Women in the City of Venice, where the Curtezans live after a more hospitable and gentile manner than the Py-Women of this Countrey.
1660		Wandring Whore II 11: But loose not an opportunity which is now offered in the presence of your constant Cully, and deep Pyeman Francion: His teeth water for a new face, mony and Cunny are good Commodities.
1669		Nicker Nicked in Harleian Misc. II (1809) 108: There come in shoals of hectors, trepanners, gilts, pads, biters, prigs, divers, lifters, kidnappers, vouchers, mill-kens, piemen, decoys, shop-lifters.