Wiktionary
vb. 1 (context intransitive literally English) To grow roots into soil. 2 (context intransitive figuratively English) To become established, to take hold.
WordNet
v. become settled or established and stable in one's residence or life style; "He finally settled down" [syn: settle, root, steady down, settle down]
Wikipedia
Take Root, a non-profit organization established on a grant from the United States Department of Justice, is the first missing-child organization ever founded by former abducted children. Incorporated in 2005, over three hundred former abducted children have participated, providing peer support to fellow former abducted children, advocating on child-abduction issues from the child-victim's perspective, and providing landmark information on the victimology of child-abduction to multidisciplinary professionals, impacted families, and the public. Their mission is to "elevate the voice of the abducted child, using the collected wisdom of former missing-children to improve America's missing-child response." Their tag-line is "beyond recovering missing-children; to helping missing-children recover."