Top Definition
A womans crotchal region that exudes a dank, mildewey odor. Can usually be remedied by showering with soap, or deusching.
John: "So how did it go last night with Karen?"
Jimmy: "All good till we made it to the bedroom. She barely got her pants off before I caught a wiff of her musty muff."
by jeffrotull87 February 15, 2012
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