Definitions

1. noun

A person who is the son of a Smith, a common English surname.

“The Smithson family has been in the United States since the 18th century.”

2. proper noun

A surname, often referring to a specific family or person, such as Sir Joseph Banks’ son, Henry de Grincourt Smithson, or more commonly Sir Joseph Banks’ son-in-law, Sir Joseph Banks’ son’s wife’s son, Sir Joseph Banks’ grandson, Sir Joseph Banks’ son’s wife’s son, Sir Joseph Banks’ great-grandson, Sir Joseph Banks’ son’s wife’s son, Sir Joseph Banks’ great-great-grandson, etc.