MUSK

noun Etymology: Middle English ~e, from Middle French musc, from Late Latin muscus, from Late Greek moschos, from Middle Persian *mušk-, from Sanskrit muṣka testicle, from diminutive of mūṣ mouse; akin to Old English mūs mouse Date: 14th century 1. a substance with a penetrating persistent odor obtained from a sac beneath the abdominal skin of the male ~ deer and used as a perfume fixative, the odor of ~, any of various plants with ~y odors