Definition of offsider in English:
nounAustralian /NZ informal
A partner, assistant, or deputy.
- One was Mr Pringle, the second one was his offsider.
- We have drill offsiders who are learning to become drillers, that are local Ballarat employees.
- He was sixty-eight at the time, had turned savagely on his loyal offsider, and showed no intention of retiring.