義兄

1. Origins, structure, and basic meaning

• Structure: 義兄 is read as ぎけい and is a kinship noun that refers in the examples to either an older sister’s husband or a wife’s older brother.
• Basic usage: It identifies an older male relative by marriage or an older stepbrother, with the exact relationship supplied by context.

2. Common pitfalls and similar expressions

• Relationship
  • Check whether the context says 姉の夫 or 妻の兄; the English label brother-in-law alone remains ambiguous.
• Meaning range
  • The recorded meaning can also include an older stepbrother, so the surrounding family description matters.