co-aunt
nounEtymology * co- + aunt
1
of a woman, an aunt of one's niece or nephew who is not one's sister; a co-sister-in-law as common aunt to the children of two women's married siblings.
2
a woman's sister, as aunt in common to the children of a third sibling
- A few years ago, my sister and co-aunt Judy started flying [our niece and nephew] Violet and Dash down to California to spend a week with her2008 August 4, “Camp Jean”, in The Favorite Aunt: Not that it’s a competition, archived from the original on 24 Mar 2009:
- Synonyms
- co-sister-in-law
- Related terms
- co-grandmother
- Coordinate terms
- co-uncle