a substance of a reddish brown color, and when fresh of the consistence of honey, obtained from a bag being behind the navel of the male musk deer. it has a slightly bitter taste, but is specially remarkable for its powerful and enduring odor. it is used in medicine as a stimulant antispasmodic. the term is also applied to secretions of various other animals, having a similar odor.-the musk deer. see musk deer (below).-the perfume emitted by musk, or any perfume somewhat similar.-the musk plant (mimulus moschatus).-a plant of the genus erodium (e. moschatum); -- called also musky heron's-bill.-a plant of the genus muscari; grape hyacinth.-to perfume with musk.