adjective
Providing parental care to children not related to oneself.
Receiving such care.
Related by such care.
noun
(countable, informal) A foster parent.
(uncountable) The care given to another; guardianship.
verb
(transitive) To nurture or bring up offspring, or to provide similar parental care to an unrelated child.
(transitive) To promote the development of something; to cultivate and grow a thing.
(transitive) To nurse or cherish something.
(intransitive, obsolete) To be nurtured or trained up together.
noun
(obsolete) A forester.