What is the meaning of scrubs?

noun

• Dense vegetation consisting of stunted trees or bushes.
  • synonyms: scrub, chaparral, bush
• The act of cleaning a surface by rubbing it with a brush and soap and water.
  • synonyms: scrub, scrubbing, scouring
• Protective garment worn by surgeons during operations.
  • synonyms: gown, surgical gown

verb

• Clean with hard rubbing.
  • usage: "She scrubbed his back"
  • synonyms: scrub, scour
• Wash thoroughly.
  • usage: "surgeons must scrub prior to an operation"
  • synonyms: scrub, scrub up
• Postpone indefinitely or annul something that was scheduled.
  • usage: "Call off the engagement"; "cancel the dinner party"; "we had to scrub our vacation plans"; "scratch that meeting-the chair is ill"
  • synonyms: cancel, call off, scratch, scrub