A friend (or, in modern usage, a relative) who agrees to sponsor and aid in the raising of one's child.  The godparent relationship is a descendant of the ancient ritual of blood-brotherhood, and traditionally the custom served the purpose of including friends into the circle of people who were obligated towards one's children.

A person who sponsors a child, usually at birth or baptism, and assumes responsibility for its faith.

A godparent or sponseris an individual, chosen by the parents of a child, who vows to takes responsibility for the child's religious education. Sponsors are usually present at a child's baptism.

a person who sponsors someone (the godchild) at baptism

a fictive kinsman who may be either a godmother or a godfather to a godchild

a mentor, helper, and friend

a person who gives life lessons--like a second parent

a person who is legally entrusted to look after a child in case both his legal parents should die

a spiratual advisor, someone that the child can come to with problems and issues that is not the parent

A godparent, in most denominations of Christianity, is someone who sponsors a child's baptism. A male godparent is a godfather and a female godparent is a godmother. The child is a godchild.