only son
An "only son" is a male child who has no brothers, highlighting his unique position in the family structure.
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Definition
A2Family
(common)The sole male child in a family, with no brothers.
Example
- John is the only son in his family, with three sisters.
- As the only son, he felt a unique sense of responsibility towards his parents.
Similar
Terms that have similar or relatively close meanings to "only son":
only childonly daughternatural sonfavorite sonlive-in son-in-lawson of the soillittle boybaby of the familybaby boy