Green’s Dictionary of Slang

a hen-roost.

1728		Defoe Street Robberies Considered 31: Eves, Hen-Roosts.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.