[skruhb] 
verb, scrubbed, scrub⋅bing, noun | 1. | to rub hard with a brush, cloth, etc., or against a rough surface in washing. |
| 2. | to subject to friction; rub. |
| 3. | to remove (dirt, grime, etc.) from something by hard rubbing while washing. |
| 4. | 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. |
| 5. | to cancel or postpone (a space flight or part of a mission): Ground control scrubbed the spacewalk. |
| 6. | Slang. to do away with; cancel: Scrub your vacation plans—there's work to do! |
| 7. | to cleanse something by hard rubbing. |
| 8. | to cleanse one's hands and arms as a preparation to performing or assisting in surgery (often fol. by up). |
| 9. | an act or instance of scrubbing. |
| 10. | a canceled or postponed space flight, launching, scheduled part of a space mission, etc. |
| 11. | something, as a cosmetic preparation, used for scrubbing. |
[skruhb] | 1. | low trees or shrubs collectively. |
| 2. | a large area covered with low trees and shrubs, as the Australian bush. |
| 3. | a domestic animal of mixed or inferior breeding; mongrel. |
| 4. | a small or insignificant person. |
| 5. | anything undersized or inferior. |
| 6. | Sports. a player not belonging to the varsity or regular team; a player who is not first-string. |
| 7. | small, undersized, or stunted. |
| 8. | inferior or insignificant. |
| 9. | abounding in or covered with low trees and shrubs: They rode through scrub country. |
| scrub 1 (skrŭb) v. scrubbed, scrub·bing, scrubs v. tr.
To clean or wash something by hard rubbing: Don't forget to scrub behind your ears. n.
scrub upTo wash the hands and arms thoroughly, as before performing or participating in surgery. [Middle English scrobben, to currycomb a horse, from Middle Dutch schrobben, to clean by rubbing, scrape; see sker-1 in Indo-European roots.] scrub'ba·ble adj. |
| scrub 2 (skrŭb) n.
[Middle English, variant of schrubbe; see shrub1.] |
scrub
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scrub
diverse assortment of vegetation types sharing the common physical characteristic of dominance by shrubs. A shrub is defined as a woody plant not exceeding 5 metres (16.4 feet) in height if it has a single main stem, or 8 metres if it is multistemmed. The world's main areas of scrubland occur in regions that have a Mediterranean climate-i.e., warm temperate, with mild, wet winters and long, dry summers. These areas include southern Australia, the Mediterranean region, California, Chile, and South Africa. Other scrublands are found in the semiarid tropics and in the Arctic, but smaller areas also occur in many other places. Australia, primarily because of its dry, variable climates, probably has the greatest expanse and range of scrublands. Their distribution is shown in
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