Green’s Dictionary of Slang

Moabite n.

a bailiff.

c.1698		B.E. Dict. Canting Crew n.p.: Moabites, Serjeants, Bailiffs and their Crew.
1699		N. Ward London Spy IX 224: Accordingly my Fellow Servant went back to the Moabite, and told him that the gentleman was within.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
c.1750–1882		B.M. Carew Life and Adventures.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1809		G. Andrewes Dict. Sl. and Cant.
1811		Lex. Balatronicum.
1823		‘Jon Bee’ Dict. of the Turf, the Ring, the Chase, etc.
1834		(con. 1737–9) W.H. Ainsworth Rookwood (1857) 85: You must now free yourself [...] from these Moabites.
1835		G. Kent Modern Flash Dict.
1848		Flash Dict. in Sinks of London Laid Open.
1859		Matsell Vocabulum.
1881		Trumble Sl. Dict. (1890) 22/2: Moabites, constables.