bizzo, n. — Green’s Dictionary of Slang

bizzo n.

also bisso

[abbr. SE business + -o sfx (3)]

(Aus.) business; also attrib.

1960		A. Buzo Front Room Boys Scene i: Do the overall tallies in the squares provided on the bizzo.
1981		J. Sullivan ‘Christmas Crackers’ Only Fools and Horses [TV script] Do the bizzo. Chat ’em up.
1986		C. Bowles G’DAY 19: When you’re off working you might be doing a bit of bizzo.
1992		A. Duff One Night Out Stealing 41: You leave the bizzo side to me.
1996		K. Lette Mad Cows 215: Every time I get a handle on this mothering bizzo, the training manual seems to get revised.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 19/1: bizzo (also bisso) n. contraband.
2003		McGill Reed Dict. of N.Z. Sl. 23: bizzo [...] ANZ surfie slang from 1950s.
2005		C. Hindrum in Tasmanian Times 4 Feb. 🌐 I can recall not so very long ago whole armies of perfectly intelligent Australians [...] carrying big bloody banners that said Sorry and all that bizzo.

In phrases

do the bizzos (v.)

(N.Z. prison) to assess a new prisoner, as to their reputation, honesty, etc.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 19/1: do the bizzos to check an inmate out, to find out about him, to verify his credentials or reputation and the truth of his statements.