| 1. | a long, narrow mark, smear, band of color, or the like: streaks of mud. |
| 2. | a portion or layer of something, distinguished by color or nature from the rest; a vein or stratum: streaks of fat in meat. |
| 3. | a vein, strain, or admixture of anything: a streak of humor. |
| 4. | Informal.
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| 5. | a flash leaving a visible line or aftereffect, as of lightning; bolt. |
| 6. | Mineralogy. the line of powder obtained by scratching a mineral or rubbing it upon a hard, rough white surface, often differing in color from the mineral in the mass, and serving as an important distinguishing character. |
| 7. | Plant Pathology.
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| 8. | to mark with a streak or streaks; form streaks on: sunlight streaking the water with gold; frost streaking the windows. |
| 9. | to lighten or color (strands of hair) for contrastive effect. |
| 10. | to dispose, arrange, smear, spread, etc., in the form of a streak or streaks: to streak cold germs on a slide for microscopic study. |
| 11. | to become streaked. |
| 12. | to run, go, or work rapidly. |
| 13. | to flash, as lightning. |
| 14. | to make a sudden dash in public while naked, esp. as a prank. |
| 15. | blue streak. blue streak. |

streak
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streaker
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streak (strēk)
n.
A line, stripe, smear, or band differentiated by color or texture from its surroundings.
streak (strēk) Pronunciation Key
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