plural bass or basses
: any of numerous edible marine or freshwater bony fishes (especially families Centrarchidae, Serranidae, and Percichthyidae of the order Perciformes)
plural basses
1
a
: the lowest voice part in a 4-part chorus
b
: the lower half of the whole vocal or instrumental tonal range compare treble entry 1
c
: the lowest adult male singing voice
also
: a person having this voice
d
: a member of a family of instruments having the lowest range: such as
(1)
(2)
2
: a deep or grave tone : a low-pitched sound
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Merriam-Webster unabridged



