■ noun
1》 a military stronghold, especially a strongly fortified town.
2》 a person or thing not susceptible to outside influence.
Origin
ME: from OFr. forteresse 'strong place', based on L. fortis 'strong'.
■ noun
1》 a military stronghold, especially a strongly fortified town.
2》 a person or thing not susceptible to outside influence.
Origin
ME: from OFr. forteresse 'strong place', based on L. fortis 'strong'.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004