1. the archetypal uncultivated Australian working man. Also spelt with a capital, Ocker. Generally used in a negative way to depict a chauvinistic, misogynistic, sports-loving, beer-gutted, esky-carrying, rubber-thong-wearing yob. Totally lacking in sensitivity, compassion, gentleness and insight. Exactly the same `bloke’ can be seen also in a positive way, as an honest, laid-back, fair dinkum, fun-loving larrikin. An Australian cult figure – popularly satirised in the 1970s by the likes of Paul Hogan and the Barry Humphries creation Bazza McKenzie. In origin, the term derives from the typically Aussie way of colloquialising the name Oscar. From as early as 1916 blokes named Oscar were called Ocker. In the late 1960s a TV comedy called The Mavis Bramston Show had a character named Ocker, played by Barry Creyton, who was your typical uncultivated Australian male, and it is probably from this show that the word was first disseminated throughout the country. As an adjective, ocker has come to mean quintessentially Australian. He had an ocker sense of humour. And although principally designating men, it can also be used of women. She was ocker through and through.
2. Australian English. I lapsed into ocker and yelled `Dice it!’
Word sourced from the Macquarie Dictionary.