fortify
verbUK /ˈfɔːtɪfaɪ/
US /ˈfɔːrtɪfaɪ/
To make something stronger so it can stay safe.
The soldiers worked all night to fortify the castle walls.
RELATED WORDS
OTHER MEANINGS
2. To add vitamins or minerals to food to make it healthier.
The cereal is fortified with iron and vitamin D.
3. To make someone feel stronger in mind or spirit.
Her kind words fortified him before the big test.
4. To build strong walls or defenses around a place.
They fortified the town against attack.