(~s)
1.
A ~ is a narrow piece of card or leather that you put between the pages of a book so that you can find a particular page easily.
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2.
In computing, a ~ is the address of an Internet site that you put into a list on your computer so that you can return to it easily. (COMPUTING)
This makes it extremely simple to save what you find with an electronic ~ so you can return to it later.
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