Green’s Dictionary of Slang

cloth market n.

a bed.

1678		J. Ray Proverbs (2nd edn).
1738		Swift Polite Conversation 4: I hope your early Rising will do you no Harm: I find you are but just come out of the Cloth-Market.
c.1786		Grose Classical Dict. of the Vulgar Tongue ms. additions n.p.: Cloth Market. He is just come from the Cloth Market, i.e. from between the Sheets, he is just risen from bed.
1788, 1796		Grose Classical Dict. of the Vulgar Tongue (2nd, 3rd edn) n.p.:
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.
1824		T. Fielding Proverbs, etc. (Familiar Phrases ) 148: He’s in the cloth market. In bed [F&H].