To absent oneself or leave early (from school or work) when one would normally be required to be there; to play truant. Primarily heard in Australia. I was so restless and bored at work that I decided to just jig it after lunch without telling anyone. Hey, Jim and I are planning on jigging from school on Friday, do you want to come with us? That's the last time you jig class, mister! From now on, I'm dropping you to school every morning!