n. a device for smoking cannabis that mixes the smoke with air. (Drugs.) : I have a carburetor with the rest of my stash.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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1866, from carburet "compound of carbon and another substance" (1795), from carb- + -uret, an archaic suffix formed from Mod.L. -uretum to parallel Fr. words in -ure. Motor vehicle sense is from 1896.