rooter

Short definition from Wiktionary

Noun

1. 1
   One who, or that which, roots; one that tears up by the roots.
2. 2
   A type of heavy machinery similar to a plow for breaking up soil, concrete, asphalt, etc.
3. 3
   A blade for producing a narrow groove in a piece of wood.
4. 4
   A device for boring a pathway through a blocked drain or sewer.
5. 5
   One who roots or rummages through something.
6. 6
   A type of malware that obtains and runs using privileged access, bypassing normal security systems.
7. 7
   One who holds a primary or founding position in an enterprise.
8. 8
   A plant, viewed in terms of how it establishes its roots.
9. 9
   One who roots for, or applauds, something.