1. an honest person, a respectable person.
|Diggings, the Bush, and Melbourne 16: I learnt that nearly all the company had been ‘Government men,’ as convicts style themselves. [...] [and] being a ‘square head,’ that is one outside of their community, I would readily be suspected if were tales told.|
|Truth (Sydney) 12 May 5/7: I shouldn’t have anticipated much less luck for a ‘Square-head’ unfortunate to get into the clutches of such a cute and foxy trickster.|
|Sydney Sportsman (Surry Hills, NSW) 10 Oct. 1/1: Square heads won’t squeal at my notes, and as for the cronk crew, I like to hear them squeak.|
|Foveaux 312: ‘What’s y’r old man do for a crust?’ Curly asked. ‘Works,’ Neicie answered shortly. ‘Drives a taxi.’ Curly raised his eyebrows. ‘A squarehead.’.|
|Sun. Mail (Adelaide) 25 Sept. 45/7: I always sought rhe company of ‘square heads’, men who have had no trouble with the law.|
|‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxix 4/5: square head: A conformist.|
|Ridgey-Didge Oz Jack Lang 45: Squareheads Non-criminals.|
|Real Thing 99: Norton, being a bit of a square-head, Queensland country boy [etc.].|
|see sense 2.|
|Chopper 4 15: I’ve never really mixed with squareheads and normal people.|
2. a stupid person.
|Taking the Count 149: He handed that big squarehead from the revenue cutter an awful trimming.‘No Business’ in|
|Cappy Ricks 20: I’ll dig up a bosun among the squareheads.|
|Phantom Detective Jan. [Internet] You squarehead—we’ve only got one coffin aboard, ain’t we?‘The Chair Cheater’ in|
|Boss of Britain’s Underworld 89: I was not like that bunch of swedes and squareheads they had in there from provincial towns.|
|Four-Legged Lottery 86: Look who’s here, the square head from the library.|
|Dict. of Invective (1991) 372: The older squarehead, a stupid person.|
|Aus. Prison Sl. Gloss. [Internet] Squarehead. A naive or uncorrupted person. Thus someone doing prison for the first time who doesn’t understand the prison values and lives according to the values of society outside: or a straight (non-gaol) person.|
3. (Aus.) a timid or conscience-ridden thief.
|Popular Dict. Aus. Sl.|
4. (Aus.) one who has no previous criminal convictions.
|Sun. Herald (Sydney) 8 June 9/2: There’s [...] the ‘cleanskin,’ ‘squarehead’ or ‘squarey,’ the new crook who has had no previous convictions.in|
|‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxix 4/5: square head: [...] An unconvicted person.|