from the precious stone, invented in the nineteenth century.
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(Australia) A type of petrol made by British Petroleum designed to be unable to be used for petrol sniffing.
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Add your own interpretation of "Opal".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.