jigger, n.² — Green’s Dictionary of Slang

jigger n.²

[the sufferer jigs with the pain]

(UK Und.) a whipping post.

1703		Hell Upon Earth 5: Jigger, a Whipping-Post.
c.1786		Grose Classical Dict. of the Vulgar Tongue ms. additions .
1788, 1796		Grose Classical Dict. of the Vulgar Tongue (2nd, 3rd edn) n.p.: Jigger, A whipping post.
1811		Lex. Balatronicum [as cit. 1788].
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.