Definition of: musk

(musk) noun
1. A soft, reddish–brown, powdery secretion of a penetrating odor, obtained from the preputial follicles or musk bag of the male musk deer. It is used by perfumers and in medicine.
2. A similar substance from some other animals, as the muskrat or civet.
3. Chem. Any of several organic compounds used to replace natural musk.
4. Muskroot.
5. The odor of musk. [<OF musc <LL muscus <Gk. moschos <Persian mushk (prob. akin to Skt. mushka testicle, dim. of mus a mouse)]