sisters-in-law

فِي ٱللُّغَةِ ٱلْإِنْجْلِيزِيَّةِ:

اسم

sisters-in-law

1. صِيغَةُ جَمْعٍ مُفْرَدُهَا [[sister-in-law]].

Note: sister-in-laws, though occassionally seen, is incorrect, as it is the sister that is pluralled, not the law.