Schwippschwager

• pl.Schwippschwäger
• gen.Schwippschwagers

1. co-brother-in-lawthe husband of someone's spouse's sister; (hence in the plural) those married to a group of siblings in relation to each other
2. co-brother-in-lawthe brother of someone's sibling's spouse; (hence in the plural) the siblings of a married couple in relation to each other