Learner's definition of PARENT
1 a : a person who is a father or mother : a person who has a child
b : an animal or plant that produces a young animal or plant
My parents live in New York.
They recently became parents. = They're new parents.
The form must be signed by a parent or guardian of the child.
A few of us are single parents. [=parents who live with a child or children and no husband, wife, or partner]
my adoptive parents [=the people who adopted me]
The organization helps people who were adopted find their birth/biological parents. [=their natural parents]
They'd like to become foster parents. [=people who volunteer to care for a child who is not their biological child]
2 a : something out of which another thing has developed — usually used before another noun b : a company or organization that owns and controls a smaller company or organization — often used before another noun
— parental/pəˈrɛntl̟/adjective,always used before a noun