Wiktionary
regrout
vb. (context transitive English) To grout again.
Usage examples of "regrout".
She helps my dad out sometimes with the restaurants, like with the billing and payroll, but mostly she stays home and does stuff like regrout the tile in the bathrooms.
After you had to dump him, you were so upset you regrouted your bathroom.
Brad to the carpentry, and spent her Sunday morning regrouting bathroom tiles.
The maple cabinets in her kitchen were finally finished, and Crow had started regrouting the bathtub just that morning.