The sister or sister-in-law of one’s parent. / (endearing) The female cousin of one’s parent.

plural of aunt

(zoology) The provision of maternal care by another, allomothering. / (sociology) The interactions arising from an aunt or aunt-like relationship

(rare) the state of being an aunt.

Alternative form of grandaunt

Alternative form of stepaunt

(informal, Britain) A writer of an advice column in a newspaper or other periodical. / (informal, Britain) Someone commonly consulted for advice about personal problems.

An aunt of one's parent (i.e. a sister or sister-in-law of one's grandparent).

A sister of one's mother. / A sister-in-law of one's mother; the wife or ex-wife of a maternal uncle. / (imprecise) A similar great aunt, etc.

A sister of someone’s father. / The wife of a sibling of someone’s father.