Definitions of scrap:

• noun:   a small piece of something that is left over after the rest has been used

  Example: "She jotted it on a scrap of paper"

• noun:   worthless material that is to be disposed of
• noun:   the act of fighting; any contest or struggle

  Example: "The unhappy couple got into a terrible scrap"

• noun:   a small fragment of something broken off from the whole
• verb:   make into scrap or refuse

  Example: "Scrap the old airplane and sell the parts"

• verb:   dispose of (something useless or old)

  Example: "Scrap your old computer"

• verb:   have a disagreement over something

  Example: "These tewo fellows are always scrapping over something"