01 n. The act of moving backward, or of putting or moving anything backward.
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1.
The act of moving backward, or of putting or moving anything backward.
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2.
That which is behind, and forms the back of, anything, usually giving strength or stability.
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3.
Support or aid given to a person or cause.
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4.
The preparation of the back of a book with glue, etc., before putting on the cover.(Bookbinding)