Green’s Dictionary of Slang

gigger n.¹

1. a door .

c.1566		Harman Caveat for Common Cursetours in Viles & Furnivall (1907) 83: a gygger, a doore.
1608		Dekker Lanthorne and Candle-Light Ch. 1: The Canters Dictionary Gigger, a doore.
1610		Rowlands Martin Mark-all 43: The Clapper dugeon lies in the skipper [...] when he binges out he dus budg to the Gigger.
1637		Dekker ‘Canters Dict.’ Eng. Villainies (8th edn).
1659		Catterpillers of this Nation Anatomized 3: In the next place see the (Gigers jack’d) doores lockt, yourself keeping the keys.
1665		Head Eng. Rogue I 49: Giger, A Door.
1688		R. Holme Academy of Armory Ch. iii item 68c: Canting Terms used by Beggars, Vagabonds, Cheaters, Cripples and Bedlams. [...] Gigger, a Door.
c.1698		B.E. Dict. Canting Crew.
1719		A. Smith Lives of Most Notorious Highway-men, etc. (1926) 206: Gigger, a door.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue n.p.: Gigger, a latch or door.
a.1790		H.T. Potter New Dict. Cant (1795).
1811		Lex. Balatronicum.
c.1850		Duncombe New and Improved Flash Dict.
1884		A. Griffiths Chronicles of Newgate 96: ‘A spacious hall’ named the ‘Gigger’ (5), after the small grate or gigger in the door.

2. (Aus.) a lock.

1895

Crowe Aus. Sl. Dict. 32: Gigger, a lock.

In compounds

In phrases