–noun

1.	the pure color of a clear sky; the primary color between green and violet in the visible spectrum, an effect of light with a wavelength between 450 and 500 nm.

2.

bluing.

3.	something having a blue color: Place the blue next to the red.

4.	a person who wears blue or is a member of a group characterized by some blue symbol: Tomorrow the blues will play the browns.

5.	(often initial capital letter) a member of the Union army in the American Civil War or the army itself. Compare gray (def. 13).

6.	bluestocking.

7.	blue ribbon (def. 1).

8.	any of several blue-winged butterflies of the family Lycaenidae.

9.	Printing. blueline.

10.	the blue, a. the sky. b. the sea. c. the remote distance: They've vanished into the blue somewhere.

–adjective

11.	of the color of blue: a blue tie.

12.	(initial capital letter) of or pertaining to the Union army in the American Civil War.

13.	(of the skin) discolored by cold, contusion, fear, or vascular collapse.

14.	depressed in spirits; dejected; melancholy: She felt blue about not being chosen for the team.

15.	holding or offering little hope; dismal; bleak: a blue outlook.

16.	characterized by or stemming from rigid morals or religion: statutes that were blue and unrealistic.

17.	marked by blasphemy: The air was blue with oaths.

18.	(of an animal's pelage) grayish-blue.

19.	indecent; somewhat obscene; risqué: a blue joke or film.

–verb (used with object)

20.	to make blue; dye a blue color.

21.	to tinge with bluing: Don't blue your clothes till the second rinse.

–verb (used without object)

22.	to become or turn blue.

—Idioms

23.	blue in the face, exhausted and speechless, as from excessive anger, physical strain, etc.: I reminded him about it till I was blue in the face.

24.	out of the blue, suddenly and unexpectedly: The inheritance came out of the blue as a stroke of good fortune.

–adjective

1.	costing very little; relatively low in price; inexpensive: a cheap dress.

2.	costing little labor or trouble: Words are cheap.

3.	charging low prices: a very cheap store.

4.	of little account; of small value; mean; shoddy: cheap conduct; cheap workmanship.

5.	embarrassed; sheepish: He felt cheap about his mistake.

6.	obtainable at a low rate of interest: when money is cheap.

7.	of decreased value or purchasing power, as currency depreciated due to inflation.

8.	stingy; miserly: He's too cheap to buy his own brother a cup of c ed2 offee.

–adverb

9.	at a low price; at small cost: He is willing to sell cheap.

—Idioms

10.	cheap at twice the price, exceedingly inexpensive: I found this old chair for eight dollars—it would be cheap at twice the price.

11.	on the cheap, Informal. inexpensively; economically: She enjoys traveling on the cheap.