Definition of "Blue" :

noun: any of numerous small butterflies of the family Lycaenidae

noun: the sodium salt of amobarbital that is used as a barbiturate; used as a sedative and a hypnotic

noun: blue clothing

"She was wearing blue."

noun: blue color or pigment; resembling the color of the clear sky in the daytime

"He had eyes of bright blue."

noun: any organization or party whose uniforms or badges are blue

"The Union army was a vast blue."

noun: the sky as viewed during daylight

"He shot an arrow into the blue."

noun: used to whiten laundry or hair or give it a bluish tinge

verb: turn blue

adjective: causing dejection

"A blue day."

adjective: of the color intermediate between green and violet; having a color similar to that of a clear unclouded sky

"October's bright blue weather."

adjective: characterized by profanity or cursing

"Blue language."

adjective: filled with melancholy and despondency

"Lonely and blue in a strange city."

adjective: morally rigorous and strict

"Blue laws."

adjective: belonging to or characteristic of the nobility or aristocracy

"A blue family."

adjective: used to signify the Union forces in the American Civil War (who wore blue uniforms)

"A ragged blue line."

adjective: suggestive of sexual impropriety

"A blue movie."