families

1. A group of people who are closely related to one another (by blood, marriage or adoption); kin; for example, a set of parents and their children; an immediate family.

   Our family lives in town.

2. An extended family; a group of people who are related to one another by blood or marriage.

   1915, William T. Groves, A History and Genealogy of the Groves Family in America

3. A (close-knit) group of people related by blood, friendship, marriage, law, or custom, especially if they live or work together.

   Our company is one big happy family.

4. Lineage, especially an honorable one
5. A rank in the classification of organisms, below order and above genus; a taxon at that rank.

   Magnolias belong to the family Magnoliaceae.

6. Any group or aggregation of things classed together as kindred or related from possessing in common characteristics which distinguish them from other things of the same order.

   Doliracetam is a drug from the racetam family.

7. A group of instruments having the same basic method of tone production.

   the brass family;  the violin family

8. A group of languages believed to have descended from the same ancestral language.

   the Indo-European language family;  the Afroasiatic language family

9. Used attributively.

   For Apocynaceae, this type of flower is a family characteristic.

noun

A person belonging to a particular family; a close relative or relation.