great-uncle

The definition of a great uncle is the brother of one of your grandparents.

(noun)

Your grandmother's brother is an example of a great uncle.

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

noun

a brother of any of one's grandparents; granduncle

See great-uncle in American Heritage Dictionary 4

or great uncle

noun

A brother of one's grandparent. Also called granduncle.

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