1. plural of grandfather; the fathers of one’s parents

1. third person singular present of grandfather; to exempt from new rules or regulations based on prior status
Usage: legal; administrative

Examples

• Both of my grandfathers served in World War II.
• The children loved visiting their grandfathers on weekends.
• Her grandfathers were immigrants from different countries.
• The new policy grandfathers existing contracts.
• The law grandfathers all current residents.
• The regulation grandfathers buildings constructed before 1990.