Green’s Dictionary of Slang

bob adj.

[abbr. bobbish adj.]
(UK Und.)

safe; pleasant, satisfactory; usu. in phr. all is bob.

[UK]B.E. Dict. Canting Crew n.p.: It’s all bob, c. all is safe, the Bet is secured.
[UK]New Canting Dict.
[UK]Bailey Universal Etym. Eng. Dict.
[UK]Grose Classical Dict. of the Vulgar Tongue n.p.: All is bob, all is safe. Cant.
[UK]B.M. Carew Life and Adventures.
[Scot]Life and Trial of James Mackcoull 86: Everything was quite bob in the meantime.
[UK]W.H. Smith ‘The Thieves’s Chaunt’ in Farmer Musa Pedestris (1896) 121: Her duds are bob — she’s a kinchin crack.
[US]Nat. Police Gaz. (NY) 11 Oct. 57/4: ‘All is bob (safe) now’.
[UK]Duncombe New and Improved Flash Dict. n.p.: Bob safe; all’s bob, all is safe.

In compounds

bob cull (n.) [cull n.1 (4)]

(UK Und.) a pleasant, good-natured person.

[UK]B.E. Dict. Canting Crew n.p.: A Bob-cull, c. a sweet-humour’d Man to a Whore, and who is very Complaisant.
[UK]New Canting Dict.
[UK]Bailey Universal Etym. Eng. Dict.
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Lytton Pelham III 295: The cove is a bob cull, and a pal of my own.
[UK]Lytton Paul Clifford I 72: Be a bob-cull, – drop the bullies, and you shall have the blunt!
[US] ‘Scene in a London Flash-Panny’ Matsell Vocabulum 102: Two blowens were clapperclawing each other for a bob-cull, who was seconding both parties, and declaring that the winner should have him.
[UK]Vanity Fair (N.Y.) 9 Nov. 216: Take all my bob culls and my bené morts. / I’d hold high revel, sluice my gob alway.
[US]Trumble Sl. Dict. (1890).
[Aus]Crowe Aus. Sl. Dict. 10: Bob Cull, a good fellow.
bob ken (n.) [ken n.1 (1)] (UK Und.)

1. a house considered worth robbing.

[UK]B.E. Dict. Canting Crew n.p.: ’Tis a bob Ken, Brush upon the Sneak, ’tis a good House, go in if you will but Tread softly.
[UK]A. Smith Lives of Most Notorious Highway-men, etc. (1926) 207: A bob, or boman-ken, i.e., a good or well furnished house, full of booty, worth robbing.
[UK]New Canting Dict.
[UK]Bailey Universal Etym. Eng. Dict.
[UK]B.M. Carew Life and Adventures.
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]G. Andrewes Dict. Sl. and Cant.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
[UK]Duncombe New and Improved Flash Dict.

2. a house occupied by thieves.

[UK]B.E. Dict. Canting Crew n.p.: A Bob Ken, or a Bowman-ken, c [...] also a House that Harbours Rogues and Thievs [sic].
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.