What does Watson mean?
Watson \wa(t)-son\ as a boys' name is of Old English origin, and the meaning of Watson is "son of Walter". Surname used as first name mainly in the 19th century. Literary: the name of Sherlock Holmes' sidekick. IBM founder Thomas Watson.
Watson is an uncommon given name for men but a very popular surname for all people (#76 out of 150436, Top 1%). (2000 U.S. Census)
Shown below is the baby name popularity of Watson for boys. Watson reached its peak position of #565 in the U.S. during 1890-1899, but is not ranked at the moment. (2014 Birth Statistics)