Herald (Melbourne) 3 Jan. 6/7: Hence [...] such phrases as ‘a dead un,’ ‘as good as boiled,’ and other sentences expressive of the advantage of betting against a horse that can by no possibility win: for ‘dead’ is a metaphorical mode of expressing the condition of an animal sure not to run, or, if running, ‘made safe not to win.’ .at as good as boiled (adj.) under boiled, adj.