Definitions

1. noun

a boxer, especially one who is champion or of high rank

“Jack Dempsey was a famous boxer in the early 20th century.”

2. proper noun

a given name, especially one associated with a particular person or family

“My friend is a Dempsey, and he’s a great guy.”

3. adjective

strong and powerful

“The Dempsey was a big, tough dog, but it was friendly.”