root
noun
°The part of a plant, generally underground, that absorbs water and nutrients.
°The part of a tooth extending into the bone holding the tooth in place.
verb
°To rummage, to search as if by digging in soil, to root out.
°To cheer to show support for a sports team, etc.
synonyms: basis, origin, source, zero more» , etymon, superuser, root account, root user, dig out, root out, rummage, barrack, cheer on, screw, shag, screw, shag