Definitions

1. noun

A place of strength or security, especially a fortified building or area

“The medieval castle served as a stronghold for the royal family.”

2. noun

A position of power or influence

“The politician’s stronghold in the city made it difficult for opponents to win the election.”

3. verb

To hold or maintain a position of power or influence

“The company stronghold its position in the market by innovating new products.”