Bass is defined as a very low range of musical notes or a person or instrument that produces those notes.(adjective)
The definition of bass is the lowest part of the musical scale.(noun)
See bass in Webster's New World College Dictionary
Origin: ME bas, base; sp. infl. by It basso
See bass in American Heritage Dictionary 4
noun pl. bass bass or bass·es
Origin: Middle English *bars, perch
Origin: , from Old English bǽrs.
Origin: Middle English bas, lowest musical part
Origin: , from bas, low; see base2.
Learn more about bass