root (of a plant);  root (of a tooth, hair, etc.);  center (of a pimple, etc.);  root (of all evil, etc.);  source;  one's true nature
 to be attached;  to be connected with;  to remain imprinted;  to scar;  to bear (fruit, interest, etc.);  to be acquired (of a habit, ability, etc.);  to increase (of strength, etc.)