Green’s Dictionary of Slang

the mouth, the jaws, the face, the lips.

1789		G. Parker Life’s Painter 134: Ye slang-boys all, since wedlock’s nooze, / Together fast has tied / Moll Blabbermums and rowling Joe.
1809		G. Andrewes Dict. Sl. and Cant.
1821		Flash Dict.
1833		‘Rowling Joey & Moll Blabbermums’ in Corinthian in Spedding & Watt (eds) Bawdy Songbooks (2011) IV 42: [as 1789].