Family

noun: family; plural noun: families

1.
a group consisting of two parents and their children living together as a unit.

“she moved in with her boyfriend’s family”

synonyms: household, ménage; More
a group of people related by blood or marriage.

“friends and family can provide support”

synonyms: relatives, relations, blood relations, family members, kin, next of kin,kinsfolk, kinsmen, kinswomen, kindred, one’s (own) flesh and blood,connections; More

the children of a person or couple being discussed.

“she has the sole responsibility for a large family”

synonyms: children, little ones, youngsters; More

informal

a local organizational unit of the Mafia or other large criminal group.

all the descendants of a common ancestor.

“the house has been owned by the same family for 300 years”

synonyms:

ancestry, parentage, birth, pedigree, genealogy, background, family tree,descent, lineage, line, line of descent, bloodline, blood, extraction,derivation, race, strain, stock, breed; More

a group of peoples from a common stock.

3.
a group of related things.

“all manuscripts that share this reading constitute a family”
BIOLOGY

a principal taxonomic category that ranks above genus and below order, usually ending in -idae (in zoology) or -aceae (in botany).

“the cabbage family”

synonyms: taxonomic group, group, order, class, subclass, genus, species; More

all the languages ultimately derived from a particular early language, regarded as a group.

“the Austronesian language family”

MATHEMATICS

a group of curves or surfaces obtained by varying the value of a constant in the equation generating them.

adjective

adjective: family

1.

designed to be suitable for children as well as adults.

“a family newspaper”

Origin

late Middle English (in sense 2 of the noun; also denoting the servants of a household or the retinue of a nobleman): from Latin familia ‘household servants, family’, from famulus ‘servant’.