Green’s Dictionary of Slang

1. (Aus.) violence.

1895

Coburg Leader (Vic.) 12 Oct. 4/4: O.B. is going to deal out splash to anyone who puts his name in this column.

2. money.

1897		Pall Mall Gazette 8 Mar. 7/3: No splosh, no oof-bird from those blokes [F&H].
1899		C. Rook Hooligan Nights 90: Your reward will be many little bits of splosh.
1901		G. LeBrunn [perf. Alec Hurley] ‘The Coster’s Family Tree’ 🎵 That bally lawye’'s getting all my bally ‘splosh’ my pedigree’s expensive .
1907		(?) H. Lawson ‘The Rising of the Court’ in Roderick (1972) 665: The last time Squinny got five bob or the risin’ he ante’d up the splosh like a man.
1907		Truth (Wellington) 6 Apr. 6: He saved up a bit of splosh.
1916		Yorks Eve. Post 16 Oct. 5/4: When a soldier has plenty of ‘splosh’ [...] he has either ‘tickled at home’ (had remittance from home), or has ‘touched’ his ‘flowers in May’, (drawn his pay).
1917		‘Henry Handel Richardson’ Aus. Felix (1971) 202: I know men who are raising the splosh any way they can to get in.
1922		W. McG. Eager Contemp. Rev. n.p.: Vey dropped ’im one, wen’ fro ’is chain an’ lockets, ’alf-inched ’is splosh and lef’ ’im barmy.
1933		Era (London) 1 Feb. 9/3: Ralph and his cobber do a bunk [...] with the splosh.
1938		F. Anthony ‘Gus Tomlins’ in Me And Gus (1977) 185: Look at all the land he owns, besides oodles of splosh in the Bank.
1953		J. Franklyn Cockney 287: Jack’s muvver’s aunt’s ’opped it an left ’im all ’er splosh!
1959		I. & P. Opie Lore and Lang. of Schoolchildren (1977) 175: Money, for instance, is variously referred to as: brass [...] sploosh, bees and honey.
1965		J. O’Grady Aussie Eng. (1966) 65: So ‘oodles of boodle’ equals [...] ‘lashin’s of splosh’.