Definition of musics:
(n) :
A series of sounds organized in time, usually employing some combination of harmony, melody, rhythm, tempo, etc., often to convey a mood.
(n) :
An art form, created by organizing pitch, rhythm, and sounds made using musical instruments and/or singing.
(n) :
(figuratively) Any interesting or pleasing sounds.
(n) :
A guide to playing or singing a particular tune; sheet music.
(n) :
(US, slang, dated) Fun; amusement.
(n) :
(US, slang, dated) Heated argument.