(1887–1969), British-born American actor; born William Henry Pratt. His name is chiefly linked with horror films, such as Frankenstein (1931) and The Body Snatcher (1945).
Definition of Karloff, Boris in US English:
Karloff, Boris
proper nounˈkärˌlôf
(1887–1969), US actor, born in England; born William Henry Pratt. He appeared mostly in horror movies, such as Frankenstein (1931) and The Body Snatcher (1945).