to rub hard with a brush, cloth, etc., or against a rough surface in washing.

to subject to friction; rub.

to remove (dirt, grime, etc.) from something by hard rubbing while washing.

Chemistry . to remove (impurities or undesirable components) from a gas by chemical means, as sulfur dioxide from smokestack gas or carbon dioxide from exhaled air in life-support packs.

to cancel or postpone (a space flight or part of a mission)

Ground control scrubbed the spacewalk.

Slang . to do away with; cancel

Scrub your vacation plansthere's work to do!

to cleanse something by hard rubbing.

to cleanse one's hands and arms as a preparation to performing or assisting in surgery (often fol. by up ).

an act or instance of scrubbing.

a canceled or postponed space flight, launching, scheduled part of a space mission, etc.

something, as a cosmetic preparation, used for scrubbing.