Green’s Dictionary of Slang

save-alls n.

[SE save-all, ‘a kind of candlestick used by our frugal forefathers to burn snuffs and ends of candles’ (Grose, 1785)]

(Anglo-Irish) ‘boys running about gentlemen’s houses in Ireland, who are fed on broken meats that would otherwise be wasted’ (Grose, 1785).

[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.