verb
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to be or serve as a covering for; to extend or spread over; to cover.
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to place something over or upon, as for protection, concealment or warmth; to cover.
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to conceal by hiding or screening; to cover.
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to keep from the knowledge of others; to keep secret.
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to close (the eyelids, a door, window, one's mouth, etc.).
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to fill (a hole, cavity, breach, crack, etc.) with something.