blues has definitions from the fields of music,fine art,psychology
1
[ noun ] (music,fine art) a type of folk song that originated among Black Americans at the beginning of the 20th century; has a melancholy sound from repeated use of blue notes

Used in print

(Whit Masterson, Evil Come, Evil Go....)

Eliminating the patter and the upbeat numbers left little but blues and other songs of equal melancholy .

2
[ noun ] (psychology) an informal term for a state of depression

Examples

"he had a bad case of the blues"

Related terms

depression

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