(1):

(v. t.) Something scraped off; hence, a small piece; a bit; a fragment; a detached, incomplete portion.

(2):

(v. t.) Specifically, a fragment of something written or printed; a brief excerpt; an unconnected extract.

(3):

(v. t.) Same as Scrap iron, below.

(4):

(v. t.) The crisp substance that remains after drying out animal fat; as, pork scraps.