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Etymology
From.

Noun

 * 1) material to cover with (such as a cosy)
 * 2)  cover song

Derived terms

 * : book covering paper to hide what book a book owner is reading, especially in a public place such as train
 * : bedspread
 * : toilet cosy
 * : pillow case

Verb

 * 1)  to cover
 * 2) to cover for; to make up for
 * 1) to cover for; to make up for