Scrub/skrʌb/ Definition 1 of 6Pro Tip 1/2Physical Effort The act of scrubbing usually requires considerable physical effort or pressure. She had to scrub vigorously to remove the stain. Pro Tip 2/2Intensive Cleaning 'Scrub' implies a thorough and often aggressive cleaning process, not just a light wash. You'll need to scrub those dishes; a quick rinse won't do.