civil partnership
noun [ C or U ] uk/ˌsɪv.əl ˈpɑːt.nə.ʃɪp/ us/ˌsɪv.əl ˈpɑːrt.nɚ.ʃɪp/
同性伴侣关系（英国同性伴侣间的合法关系，享有与异性夫妻同等的权利）
in the UK, a legal relationship between two people of the same sex that gives them the same rights as people who are married