Green’s Dictionary of Slang

1. (Aus.) a pawnbroker, a seller of clothes.

1832		Currency Lad (Sydney) 3 Nov. 4/2: Well, the first thing (in course) I does, was to make for old Moses’ slop-shop, and to search for a suit of shore-going togs.
1892		‘A Student of Medicine’ Deuteronomy Smith 51: Deuteronomy gathered together his ornaments of gold and silver [...] And he carried them by secret ways to the house of Moses hiis uncle.

2. (Aus. und.) a receiver of stolen goods.

1901

Truth (Sydney) 29 Sept. 7/3: Moses, as they calls the old ’un, / He does all the business part.

3. see ikey-mo n.