1N-COUNT [usually plural]长筒靴;长筒军靴Jackboots are heavy boots that come up to the knee, such as the ones worn by some soldiers. 长筒靴;长筒军靴
2PHRASE 处于暴政下;处于专制统治下 If a country or group of people is under the jackboot, they are suffering because the government is cruel and undemocratic. 处于暴政下;处于专制统治下 [disapproval]