great-aunt

The definition of a great aunt is the sister of one of your grandparents.

(noun)

An example of a great aunt is your grandmother's sister.

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See great-aunt in Webster's New World College Dictionary

noun

a sister of any of one's grandparents; grandaunt

See great-aunt in American Heritage Dictionary 4

or great aunt

noun
A sister of one's grandparent. Also called grandaunt.

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