blues

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A state of depression or melancholy. Often used with the.
2. n. A style of music that evolved from southern African-American secular songs and is usually distinguished by a strong 4/4 rhythm, flatted thirds and sevenths, a 12-bar structure, and lyrics in a three-line stanza in which the second line repeats the first: "The blues is an expression of anger against shame and humiliation” ( B.B. King).

Wiktionary

1. n. Plural form of blue.
2. n. informal A feeling of sadness or depression.
3. n. singular or plural, informal One's particular life experience, particularly including the hardships one has faced.
4. n. A musical form, African-American in origin, generally featuring an eight-bar or twelve-bar structure and using the blues scale.
5. n. music, always singular A musical composition following blues forms.
6. n. A uniform made principally of a blue fabric.
7. n. sports Any of a number of sports teams which wear blue kit.
8. v. Third-person singular simple present indicative form of blue.

GNU Webster's 1913

1. n. a type of folk song that originated among Black Americans at the beginning of the 20th century; has a melancholoy sound from repeated used of blue notes.
2. n. a state of depression.

WordNet 3.0

1. n. a state of depression
2. n. a type of folksong that originated among Black Americans at the beginning of the 20th century; has a melancholy sound from repeated use of blue notes