1 an area in which there is a lot of support for a particular belief or group of people, especially a political party 有广泛支持的地方；势力强大的地方: a Republican stronghold/a stronghold of Republicanism 共和党势力强大的地区 The college is a stronghold of the child-centred approach to teaching. 这所大学大力支持以孩子为中心的教学方法。

2 a castle or a place that is strongly built and difficult to attack 堡垒；要塞；据点: Troops surrounded the mountain stronghold of the guerrillas. 军队包围了游击队的山区据点。