Green’s Dictionary of Slang

(UK Und.) a gaoler, a turnkey.

a.1790		H.T. Potter New Dict. Cant (1795) n.p.: black cove dubber or quod [sic] a gaoler, or turnkey.
1809		G. Andrewes Dict. Sl. and Cant.
1821		Flash Dict.
1835		G. Kent Modern Flash Dict.
1848		Flash Dict. (in Sinks of London Laid Open.
1881		Trumble Sl. Dict. (1890).
1895		Crowe Aus. Sl. Dict. 9: Black Cove Dubber, a turnkey.
1901		Argus (Melbourne) 20 Sept. 6/4: The turnkey who receives him [into prison] is the black cove dubber.

to pay a share of money, to contribute.

1940		M. Marples Public School Slang 65: When a party of boys pool their slender resources to buy something which none alone can afford it is known as dubbing in — e.g. ‘Let’s dub in for a pot of jam’.
1957		D. Niland Call Me When the Cross Turns Over (1958) 205: Those who could dubbed in.
1960		J. McKinney Well II i: Yers can all dub in. Won’t cost that much.
1980		L. Mantell Murder and Chips 127: Rented this beach house. Community living. All dubbing in.
1988		McGill Dict. of Kiwi Sl. 40/2: dub in to contribute to a kitty or collection; eg ‘Are you dubbing in for her going away present?’ Local variant of ‘dub up’, pay up, mid-C19 English slang.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].

to be quiet; esp. as imper.

1823

‘Jon Bee’ Dict. of the Turf, the Ring, the Chase, etc. 72: ‘Dub your mummer’ — shut your mouth.

to open a door, to unlock a door; occas. to shut or lock up a door (cf. dup the jigger under dup v.).

1688		R. Holme Academy of Armory Ch. iii item 68c: Canting Terms used by Beggars, Vagabonds, Cheaters, Cripples and Bedlams. [...] Dub the Giger, open the Door.
c.1698		B.E. Dict. Canting Crew n.p.: Dub the giger, c. open the Door. [Ibid.] ’Tis all Bob, and then to dub the gigg, c. now the coast is clear, there’s good Booty.
1719		A. Smith Lives of Most Notorious Highway-men, etc. (1926) 204: [...] Tis all bob, and then to dub the gigg, i.e., now the coast is clear, there’s good booty, let’s fall on and rob the house. [Ibid.] 205: Dub the gigger, i.e., open the door. We’ll strike it upon the dub, i.e., we’ll rob the place. [Ibid.] 206: Gigger, a door. Dub the gigger, i.e., open the door with the picklock that we may go in and rob the house.
1725		New Canting Dict. n.p.: Dub the Gigger, that we may ravage the Ken; i.e. Open the Door with the Pick-lock that we may go in and Rob the House.
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1781		G. Parker Society and Manners in High and Low Life in Ribton-Turner (1887) n.p.: jigger-dubber. – Is a term applied to jailors or turnkeys, jigger being flash or cant for door. Dub the jigger is, in other words, shut the door.
1785		Grose Classical Dict. of the Vulgar Tongue n.p.: Now let’s dub the gigg of the case; now the coast is clear, let us break open the door of the house.
1796		Grose Classical Dict. of the Vulgar Tongue (3rd edn) n.p.: Dub the Jigger. Open the door.
1809		G. Andrewes Dict. Sl. and Cant.
1811		Lex. Balatronicum [as cit. 1796].
1828		Lytton Pelham III 333: Crash the cull – down with him – down with him, before he dubs the jigger.
1835		G. Kent Modern Flash Dict.
1844		New Sprees of London 14: [T]his dodge made the rumculls crabby, and they clapped the rephoop on him, and dubbed his gigger.
c.1850		Duncombe New and Improved Flash Dict.
1859		Matsell Vocabulum 37: gig A door. ‘Dub the gig of the casa,’ break open the door of the house.
1859		‘Scene in a London Flash-Panny’ Matsell Vocabulum 103: ‘Some swells on a lark,’ exclaimed lawyer Knapp ; ‘dub the jigger and let them in.’.
1861		Melbourne Punch ‘The Lay of the Lags’ 14 Mar. 1/1: Ye who screeve, and ye who blob, / Close the ken and dub the jigger, / Great’s the news for all who rob.
1861		Vanity Fair (N.Y.) 9 Nov. 216: Else quick I’d cross and bienly dub the jigger.
1870		Hotten Sl. Dict.
1881		Newcastle Courant 9 Sept. 6/5: When we enter the chovey and dub the jigger, slour us in and remain dark until you hear a cat mew.
1895		Crowe Aus. Sl. Dict. 25: Dub the Jigger, open the door.

see separate entry.