a long, thin mark that is easily noticed because it is very different from the area surrounding it:
The window cleaner left dirty streaks on the windows.
I dye my hair to hide my grey streaks.
streak of Meteors produce streaks of light as they burn up in the earth's atmosphere.
an often unpleasant characteristic that is very different from other characteristics:
stubborn streak Her stubborn streak makes her very difficult to work with sometimes.
competitive streak You need to have a competitive streak when you're working in marketing.
a short period of good or bad luck:
lucky streak I just hope my lucky streak continues until the world championships.
losing streak Their longest losing streak has been three games.
on a streak After winning a couple of bets, he thought he was on a winning streak.
something that happens or is done over a period of time without a break:
The thunderstorm ended a streak of 90 days without any rain.
She asked me if I would start a streak with her on Snapchat.
to move somewhere extremely quickly, usually in a straight line:
streak down The motorbike streaked off down the street.
streak past Did you see that bird streak past the window?
to run naked through a public place in order to attract attention or to express strong disapproval of something
a mark of a color that is different from what surrounds it, or a thin strip of light:
Streaks of gray and black colored the marble.
The comet appeared as a dazzling streak in the sky.
an obvious characteristic in a personality:
He seems to have a mean streak that I hadn’t noticed before.
a period during which a series of things happens:
What will the team do after this memorable eight-game winning streak?
to move quickly:
The space shuttle rose from its launching pad and streaked into the sky.
to make lines of a different color in or on something:
Her cheeks were streaked with sweat and dirt.
a period of time during which something continues to happen, for example to go up or down in value or to succeed or fail:
a streak of sth Stocks tumbled Thursday, ending a three-session streak of record highs.
a winning/losing streak Wall Street broke a three-day losing streak as the Dow closed up 137.33 points at 9188.15.
a part of someone's personality:
an ambitous/competitive/independent streak
a streak of determination/independence/arrogance