Co-grandmother Definition
noun
The mother of one's son- or daughter-in-law, as common grandmother of their children; the relationship between women who have grandchildren in common; maternal grandmother vis-à-vis paternal grandmother.
Wiktionary
Other Word Forms of Co-grandmother
Noun
Singular:
co-grandmother
Plural:
co-grandmothersOrigin of Co-grandmother
-
co- + grandmother
From Wiktionary
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