The story
* co- + grandparent
Etymology from Wiktionary, CC BY-SA 4.0.
co-grandparent
Today it means: The parent of one's son- or daughter-in-law as a common grandparent to children of that union. Full definition →
Today it means: The parent of one's son- or daughter-in-law as a common grandparent to children of that union. Full definition →
* co- + grandparent
Etymology from Wiktionary, CC BY-SA 4.0.