Definitions of scrub:

  • noun:   the act of cleaning a surface by rubbing it with a brush and soap and water
  • noun:   dense vegetation consisting of stunted trees or bushes
  • verb:   wash thoroughly
    Example: "Surgeons must scrub prior to an operation"
  • verb:   clean with hard rubbing
    Example: "She scrubbed his back"
  • adjective:   (of domestic animals) not selectively bred