Green’s Dictionary of Slang

Old Start, the n.

[Start, the n. (1), the Old Bailey was erected on the site of Newgate prison]

Newgate prison.

[UK]Grose Classical Dict. of the Vulgar Tongue (3rd edn).
[UK]Lex. Balatronicum.
[Scot]Life and Trial of James Mackcoull 18: Should they lock him up in Old Start, he’s sure to be hanged.