superannuation
noun [ U ] mainly UK uk/ˌsuː.pərˌæn.juˈeɪ.ʃən/ us/ˌsuː.pɚˌæn.juˈeɪ.ʃən/
养老金;退休金
money that people pay while they are working, so that they will receive payment when they stop working when they are old, or the payment they receive when they stop working