musk /mʌsk/ BrE AmE noun [uncountable]
[ Date: 1300-1400 ; Language: French ; Origin: musc , from Late Latin muscus , from Greek moschos , from Persian mushk , from Sanskrit muska 'testicle' ; because the substance comes from a part of a deer near its testicles ]
1 . a substance with a strong smell that is used to make ↑ perfume
2 . written a strong smell, especially the way a person smells:
the musk of sweat and muscle
—musky adjective