⇨ wizzard; wizzard of oznoun an ounce of marijuana. This plays on the conventional abbreviation 'oz' (ounce) and, by association with the film The Wizard of Oz, 1939, which contains the song 'Somewhere Over The Rainbow', suggesting where this measure of marijuana might take you. The misspelling 'wizzard', if deliberate, may be punning on WHIZZ (amphetamine) UK, 2001