Green’s Dictionary of Slang

1. see chook n.

2. (Aus.) a general term of affection.

1941		Baker Popular Dict. Aus. Sl.
1987		Canberra Times (ACT) 24 Jan. 11/1: Family Notices [...] 21st BIRTHDAY DAVID. — Better late than never, happy 21st for Dec- 22. Love you always Chooky.

3. (Aus./N.Z.) a girlfriend; any young woman.

1967		J. Brooks Opal Witch (1970) 174: I’ve got a smart little chookie in Kilpa.
1988		McGill Dict. of Kiwi Sl. 27/2: chookie girlfriend or young woman.
2003		McGill Reed Dict. of N.Z. Sl. [as cit. 1988].