| Blue | |
| 1. s. A letterman at Oxford or Cambridge. | |
| 2. s. (historical) A member of the Royal Horse Guards (which merged with the 1st Dragoons in 1969) | |
| 3. s. synonym of British Blue, , a breed of cat | |
| 4. adj. Of the colour blue. | |
| the deep blue sea | |
| 5. adj. (informal) Depressed, melancholic, sad. | |
| 6. adj. Pale, without redness or glare; said of a flame. | |
| The candle burns blue. | |
| 7. adj. (politics) Supportive of, run by (a member of), pertaining to, or dominated by a political party represented by the colour blue. | |
| 8. adj. (politics, in particular, in the US) Supportive of, run by (a member of), pertaining to, or dominated by the Democratic Party. | |
| I live in a blue constituency. Congress turned blue in the mid-term elections. | |
| 9. adj. (AU, politics) Supportive of or related to the Liberal Party. | |
| Illawarra turns blue in Liberal washout | |
| 10. adj. (astronomy) Of the higher-frequency region of the part of the electromagnetic spectrum which is relevant in the specific observation. | |
| 11. adj. (of steak) Extra rare; left very raw and cold. | |
| 12. adj. (of a dog or cat) Having a coat of fur of a slaty gray shade. | |
| 13. adj. (archaic) Severe or overly strict in morals; gloomy. | |
| blue and sour religionists; blue laws | |
| 14. adj. (archaic, of women) literary; bluestockinged. | |
| 15. adj. (particle physics) Having a color charge of blue. | |
| 16. adj. (entertainment) Risque or obscene | |
| His material is too blue for prime-time | |
| 17. s. The colour of the clear sky or the deep sea, between green and violet in the visible spectrum, and one of the primary additive colours for transmitted light; the colour obtained by subtracting red and | |
| (color panel, blue, 0028E9) | |
| 18. s. A blue dye or pigment. | |
| 19. s. Any of several processes to protect metal against rust. | |
| 20. s. Blue clothing | |
| The boys in blue marched to the pipers. | |
| 21. s. (in the plural) A blue uniform. See blues. | |
| 22. s. (slang) A member of law enforcement | |
| 23. s. The sky, literally or figuratively. | |
| The ball came out of the blue and cracked his windshield. | |
| His request for leave came out of the blue. | |
| 24. s. The ocean; deep waters. | |
| 25. s. Anything blue, especially to distinguish it from similar objects differing only in color. | |
| 26. s. A dog or cat with a slaty gray coat. | |
| 27. s. (snooker) One of the colour balls used in snooker, with a value of five points. | |
| 28. s. Any of the butterflies of the subfamily in the family Lycaenidae, most of which have blue on their wings. | |
| 29. s. A bluefish. | |
| 30. s. (Australia, colloquial) An argument. | |
| 31. s. A liquid with an intense blue colour, added to a laundry wash to prevent yellowing of white clothes. | |
| 32. s. (British) A type of firecracker. | |
| 33. s. (archaic) A pedantic woman; a bluestocking. | |
| 34. s. (particle physics) One of the three color charges for quarks. | |
| 35. v. To make or become blue. | |
| 36. v. (transitive, metallurgy) To treat the surface of steel so that it is passivated chemically and becomes more resistant to rust. | |
| 37. v. (transitive, laundry) To brighten by treating with blue (laundry aid) | |
| 38. v. (transitive, slang) To spend (money) extravagantly; to blow. | |
| 39. adj. (entertainment, informal) Pornographic or profane. | |
| The air was blue with oaths. | |
| a blue movie | |
