(genetics) A group of closely related genes that make similar gene products.

(marketing, singular only) A size for a container of goods, among the largest sizes meant for sale to a householder consumer.

(idiomatic) To be a characteristic feature that is observed in several generations of a family.

plural of family tree

Political and social beliefs that hold the nuclear family to be the essential ethical and moral unit of society.

The family of the President of the United States. / (by extension) The immediate family of a political chief executive.

(Christianity) Jesus Christ, the Virgin Mary, and Joseph.

A family, one of whose members is a member of one of the charitable pearly guilds from East London, and who dress in unique pearly suits for election as pearly kings and queens in April each year.

(anthropology) A family system in which a couple's firstborn child lives with them in the family home, and that child's spouse moves into the home of said in-laws, so that the younger couple's children are raised in the home of their grandparents. Usually, the younger offspring move out upon marriage. The inheritance, depending on the culture, may or may not be the most favorable to the firstborn.

A family in the working class.