blues (Noun) — 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.
blues (Noun) — A state of depression. ex. "he had a bad case of the blues"
blues (Noun) — Blue colour or pigment; resembling the colour of the clear sky in the daytime. ex. "he had eyes of bright blue"
blues (Noun) — Blue clothing. ex. "she was wearing blue"
blues (Noun) — Any organization or party whose uniforms or badges are blue. ex. "the Union army was a vast blue"
blues (Noun) — The sky as viewed during daylight. ex. "he shot an arrow into the blue"
blues (Noun) — Used to whiten laundry, hair or give it a bluish tinge.
blues (Noun) — The sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic.
blues (Noun) — Any of numerous small butterflies of the family Lycaenidae.
blues (Noun) — An angry dispute.
blues (Noun) — Someone who has red hair.
blues (Noun) — An embarrassing mistake.
blues (Verb) — Turn blue.