(n): a person who uses scientific knowledge to solve practical problems
(n): United States psychologist considered the founder of behavioristic psychology (1878-1958)
(n): a scientist trained in psychology
(n): United States geneticist who (with Crick in 1953) helped discover the helical structure of DNA (born in 1928)
(n): a biologist who specializes in genetics
Watson does not just refer to _the_ Dr. John H. Watson, but has become a general term for a detective's sidekick or confidant. "Nero Wolfe and his Watson, Archie Goodwin." See also watsonize, ewig-Watsonische.