Green’s Dictionary of Slang

1. used variously in sexual contexts to mask parts of the body or (see sense 3) sexual activities; the usual sense of vagina is contradicted in the essay cited above.

1573		G. Gascoigne Hundreth Sundrie Flowres 92: He drewe uppon his new professed enimie, and bare hir up with such a violence against the holster, that before shee could prepare the warde, he thrust hir through both hands, and &c, wher by the Dame swoning for feare, was constreyned ... to abandon hir body to the enemies curtesie.
1595		Shakespeare Romeo and Juliet II i: O, that she were An open et-caetera, thou a poperin pear!
1639		Ford Lady’s Trial II i: Money is trash, and ladies are et caeteras.
c.1650		Le Strange Merry Passages and Jeasts No. 263 81: Where should he find his Finger but in his wifes Et Caetera.
a.1680		Rochester ‘Et Caetera’ in Morton Lover’s Tongue (2003) 135: As on Corinna’s Breast I panting lay, / My right Hand playing with Et Caetera.
1748–49		Cleland Memoirs of a Woman of Pleasure (1985) 233: [...] going over every part of me, neck, breast, belly, thighs, and all the sweet et cetera, so dear to the imagination.
1784		Rambler’s Mag. May 168/1: Such eyes, such lips, such b—s, and such a **** Oh ye Gods, and such etcaeteras.
1890–1904		Farmer & Henley Sl. and Its Analogues.

2. venereal disease.

1658

F. Osborne Historical Memoires 87: Po his Physician ... (a mere Empericke, and celebrated for no skill but in the cure of the &c.).

3. sexual intercourse.

a.1680		Rochester ‘Et Caetera’ n.p.: And thus the hasty Moments slipt away, / Lost in the Transports of Et Caetera.
1732		Gent.’s Mag. II June 790: [Able] to instruct both Sexes in good Letters, good Manners, Writing, Needle-Work, and a nameless Et cetera.
1767		Bridges Homer Travestie (2nd edn) I 107: He seiz’d her, and began to play / The prelude to et caetera.