⇨ OZ; oh-zeenoun an ounce of marijuana or other drugs. Spelling out the standard abbreviation for 'ounce' US, 1933

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nickname Australia. Although the pronunciation would always have had a final 'z' (the 's' becomes voiced) it was first recorded as 'Oss' in 1908 (Australian National Dictionary), and not as 'Oz' until 1944, which spelling is partially influenced by the immensely popular 1939 film The Wizard of Oz. Became common in the 1970s AUSTRALIA, 1908adjective Australian AUSTRALIA, 1974