I think this is what you want:
scrub [skruhb]
noun
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.
It's also used to identify a troll.
English
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No verb definition? To wash?