bastion
(Informal, offensive)
[noun]
Synonyms: stronghold, bulwark, citadel, defence, fortress, mainstay, prop, rock, support, tower of strength

[TahlilGaran] English Synonym Dictionary ▲

bas‧ti‧on /ˈbæstiən $ -tʃən/ noun [countable]
[Date: 1500-1600; Language: French; Origin: bastille 'strong building, castle', from Old Provençal bastida, from bastir 'to build']

1. something that protects a way of life, principle etc that seems likely to change or end completely
bastion of
These clubs are the last bastions of male privilege.

2. a place where a country or army has strong military defences:
Pearl Harbor was the principal American bastion in the Pacific.

3. technical a part of a castle wall that sticks out from the rest

[TahlilGaran] Dictionary of Contemporary English ▲