Green’s Dictionary of Slang

(Aus.) lit. or fig., small, reduced; disappointing.

1996		J. Byrell Lairs, Urgers & Coat-Tuggers 249: [H]e is so kleiner in the kick that, if this nag [...] doesn’t score, he and Sue will be forced to doss down in their old Falcon that night.
1996		J. Byrell Lairs, Urgers & Coat-Tuggers 249: [He] had been lumbered with the nickname ‘Lennie The Loser’ due, in the main, to a fearsome piece of stiffshit kleiner luck which befell him when he invested in a racing hound.
1996		J. Byrell Lairs, Urgers & Coat-Tuggers 277: ‘I was,’ said Johnny Tapp, ‘fair dinkum breaking out in boils about fronting Rosemary with that kind of kleiner news’.
1996		J. Byrell Lairs, Urgers & Coat-Tuggers xix: The Flea had his kleiner runs with the punt and when he did he used to go back down to the markets for some sustenance work.