support group
noun [ C ] uk/səˈpɔːt ˌɡruːp/ us/səˈpɔːrt ˌɡruːp/
（尤指经历过相同苦难的人组成的）互助协会
a group of people who have had similar experiences, especially difficult ones, and who provide help to each other
After their baby died, they joined a local support group. 孩子死后，他们加入了当地的一个互助协会。