Definition of Rambo noun from the Oxford Advanced Learner's Dictionary

 

Rambo

 noun
noun
BrE BrE//ˈræmbəʊ//
 
; NAmE NAmE//ˈræmboʊ//
 
(informal)
 
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a very strong and aggressive man Culture Rambo is a powerful and violent man with big muscles who fights against evil forces threatening the world. The films were First Blood (1982), Rambo: First Blood Part II (1985) and Rambo III (1988). Word Originthe name of the hero of David Morrell's novel First Blood (1972), popularized in the films First Blood (1982) and Rambo: First Blood Part II (1985).
See the Oxford Advanced American Dictionary entry: Rambo