Green’s Dictionary of Slang

rent v.

1. to obtain money by criminal means, e.g. blackmail (apparently specific to Oscar Wilde and his circle).

[US]O. Wilde letter Mar. in Holland Complete Letters (2000) 560: I’d sooner be rented all day, than have you bitter, unjust and horrid – horrid –.
[US]O. Wilde letter 11 May in Holland Complete Letters 1066: Bosie [...] is devoted to dreadful little ruffian aged fourteen [...] every time he goes home with Bosie he tries to rent him.
I.L. Pavia Jahrbuch für sexuelle Zwischenstufen No. 11 41: To rent = erpressen [GS].
(con. 1890s) F. Harris Oscar Wilde (1965) 103: ‘Why does he give it [a letter] back to me?’ I [Wilde] asked carelessly. ‘He says you were kind to him and that it is no use trying to “rent” you; you only laugh at us.’.

2. to work as a homosexual prostitute, to take money in return for sexual favours.

[UK]G. Westwood A Minority 155: There will always be young men who like to make easy money. [...] They may start renting because they’ve been introduced into it by young normal boys.
[US]Maledicta IV:2 (Winter) 230: The square [...] where Guardsmen are or used to be rented = picked up as hustlers.
[SA]K. Cage Gayle 91/1: rent v. to prostitute oneself for the pleasure of gay men.