Direct Answer
Your brother’s son is commonly called your nephew. This is the standard English term used in family, legal, and medical contexts to describe the male child of your sibling. The equivalent for your brother’s daughter is niece. While everyday speech focuses on nephew, relationship terminology can vary by region and context, but nephew remains the widely recognized and precise term.
Core Kinship Terminology
Kinship terms help clarify family relationships in a consistent way. For the child of a sibling, specific terms distinguish gender and side of the family. Understanding these terms supports clear communication in both personal and professional settings.
Standard Terms for a Brother’s Son
- Nephew: the son of your brother or sister.
- Sibling: a brother or sister.
- Brother: a male sibling.
Practical Usage and Examples
In everyday language, you might say, “My brother’s son is my nephew.” This usage appears in conversation, introductions, and formal documents. For example, “I am the guardian of my nephew until he turns eighteen.” The term applies regardless of your gender or your brother’s age.
Regional and Contextual Variations
While “nephew” is standard, some dialects or cultures use alternative or additional terms. Legal and medical documents rely on the standard term to avoid ambiguity. Informal speech may use nicknames, but the underlying relationship term remains nephew.
Relationship Direction and Generations
Your brother is in the same generation as you, and his son is one generation below. This places your brother’s son in the category of a descendant of your sibling, making you an uncle and him your nephew. The female counterpart is niece.
Comparison of Common Sibling Terms
| Relationship | Term | Notes |
|---|---|---|
| Brother’s son | Nephew | Standard term; male grandchild equivalent when viewed from parent perspective |
| Sister’s son | Nephew | Same term applies |
| Brother’s daughter | Niece | Standard term for female child of a sibling |
| Your child | Son or daughter | Direct parent-child relationship |
Legal and Administrative Context
In legal, medical, and administrative contexts, “nephew” is the precise term used to identify the male child of a sibling. This clarity matters in forms, guardianship documents, and inheritance records. Using consistent terminology reduces confusion in official processes.
Extended Family Connections
The term nephew also aligns with related roles. You are the uncle of your brother’s son, and his children are your great-nephew or great-niece if they have children. Mapping these connections helps in complex family structures and genealogy research.
Summary
Your brother’s son is called your nephew. This term is universally understood, gender-specific for males, and used across personal, professional, and official contexts. Recognizing this relationship term supports accurate communication and understanding within family structures.