Providing parental care to children not related to oneself. / Receiving such care. / Related by such care.

(countable, informal) A foster parent. / (uncountable) The care given to another; guardianship.

(transitive) To nurture or bring up offspring, or to provide similar parental care to an unrelated child. / (transitive) To cultivate and grow something. / (transitive) To nurse or cherish something.

(obsolete) A forester.

An English surname originating as an occupation, variant of Forster. / A male given name transferred from the surname. / A former settlement in San Diego County, California.

simple past tense and past participle of foster

One who fosters; one who is designated to care for and nurture someone.

plural of fosterer

present participle of foster

raising someone to be an accepted member of the community. / encouragement; aiding the development of something