Harold Holt, n. — Green’s Dictionary of Slang

Harold Holt n.

[rhy. sl.; ult. Aus. Prime Minister Harold Holt (1908–67), who died in mysterious circumstances, apparently drowned in the Bass Strait]

(Aus.)

1. salt.

2002		Pete’s Aussie Sl. Home Page 🌐 Harold Holt (1): salt.
2021		Betoota-isms 246: ‘Hey darl, do you mind passin’ the Harold Holt’.

2. a bolt, an act of absconding; thus do a Harold Holt, to abscond.

1985		R.G. Barrett You Wouldn’t Be Dead for Quids (1989) 145: We’ll finish these [drinks] and Harold Holt.
2002		Pete’s Aussie Sl. Home Page 🌐 Harold Holt (2): a bolt (abscond = he done a Harold holt).
2013		T. Peacock More You Bet 43: If that firat favourite looked like winning they were to [...] ‘do the Harold Holt’ (which is rhyming slang for ‘the bolt’).