A male person whose sperm unites with an egg, resulting in the conception of a child. A man who adopts a child. A man who raises a child. A male parent of an animal. A male ancestor. A man who creates, originates, or founds something: Chaucer is considered the father of English poetry. An early form; a prototype. Christianity God. Christianity The first person of the Christian Trinity. An elderly or venerable man. Used as a title of respect. A member of the senate in ancient Rome. One of the leading men, as of a city: the town fathers. A church father. A priest or clergyman in the Roman Catholic or Anglican churches. Used as a title and form of address with or without the clergyman's name. To procreate (offspring) as the male parent. To act or serve as a father to (a child). To create, found, or originate. To acknowledge responsibility for. To attribute the paternity, creation, or origin of. To assign falsely or unjustly; foist. To act or serve as a father.