Sis forStreak

Photo of streaky clounds

S is for Streak (Shape)

Shapes
A streak is a long, narrow band of something. A streak might be a dirty mark, a patch of color, or even a cloud formation.
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Christopher Harriot / CC BY-SA
Photo of a group of tigers

S is for Streak (Tigers)

Collective nouns
A group of tigers is called a streak, or an ambush.
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MasterPhoto-DK / CC BY-SA