co-sister
noun[C]
Indian Englishuk/ˈkəʊˌsɪs.tər/us/ˈkoʊˌsɪs.tɚ/thewifeofyourhusband'sbrother
自己丈夫哥哥（或弟弟）的妻子Family: non-blood relations
- auntie
- blended family
- brother-in-law
- co-brother
- daughter-in-law
- godfather
- godmother
- godparent
- godson
- in-law
- sister-in-law
- son-in-law
- step
- stepbrother
- stepchild
- stepmother
- stepmum
- stepparent
- stepsister
- stepson