Green’s Dictionary of Slang

1. (N.Z. prison) a probation officer.

1973		E. Droge Patrolman 31: One of the ‘probies’ spoke up.
1982		G. Newbold Big Huey 252: probie (n) Probation or parole officer.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 145/2: probie n. 1 a familiar short name for a Probation [...] or Parole Officer .
2003		McGill Reed Dict. of N.Z. Sl. 163: pro/probie 1. Probation officer.

2. one who is ‘on probation’ to become a full member of a gang.

2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 145/2: probie n. 2 (amongst European-led, esp. white supremacist or skinhead gangs) short for 'probationary member', a junior member of a gang, training to be a full member.
2003		McGill Reed Dict. of N.Z. Sl.

3. (N.Z. prison) a newly qualified prison offiicer.

2001

D. Looser Boobslang [U. Canterbury D.Phil. thesis] 145/2: probie n. 3 a prison officer recently completed his or her training. [short for probationary screw].

4. a probation order.

2003

McGill Reed Dict. of N.Z. Sl. 163: pro/probie [...] 2. A prohibition order, preventing someone coming within a certain distance of someone else, usually because of violent actions.