noun
An often humid, yellowish froth produced by fermenting malt worts, and used to brew beer, leaven bread, and also used in certain medicines.
A single-celled fungus of a wide variety of taxonomic families.
(figuratively) A frothy foam.
verb
To ferment.
(of something prepared with a yeasted dough) To rise.
(African-American Vernacular, slang) To exaggerate.