1. noun /ˈɡɹændˌfɑː(ɹ)ðə(ɹ)/
b) a male forefather
2. verb /ˈɡɹændˌfɑː(ɹ)ðə(ɹ)/
To retain existing laws or rules only for those people or organisations that were previously affected by them, and apply new laws or rules to the unaffected people or organisations.
Wikipedia foundation.