n An often humid, yellowish froth produced by fermenting malt worts, and used to brew beer, leaven bread, and also used in certain medicines.
n A compressed cake or dried granules of this substance used for mixing with flour to make bread dough rise.
v (African American Vernacular English|slang) To exaggeratehttp://www.probertencyclopaedia.com/cgi-bin/res.pl?keyword=Yeasting&offset=0