Definition of "great-aunt" []

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

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "My relationship with Eva was closer than the term great-aunt usually suggests."
• "I called my great-aunt and made plans to go to her apartment in Rego Park, Queens, for the holiday."
• "I don’t want to call your great-aunt and tell her I murdered you by flea bomb."