Co-grandparents

Noun

plural

1. Plural of co-grandparent
• 2009, May 19, Beth Teitell, Horns Come Out When Grandparents Envy Each Other, Most grandparents aren't engaged in a duel with their co-grandparents, but the desire to be the most beloved, most generous grandparent often simmers beneath the surface. ... “It can get to the point where they can't speak to the co-grandparents, or the parents can't have events where they're both there,” she said.