Parabellum is Latin for 'prepare for war' and is often used within the context of the phrase Si vis pacem, para bellum, meaning 'If you want peace, prepare for . Parabellum definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now! Early 20th century: the name of a German make of gun, from Latin para bellum (from para! 'prepare!' (imperative of parare) + bellum 'war') in the phrase si vis . Si vis pacem, para bellum definition is - if you want peace, prepare for war. Jan 17, 2019 - A totally calm analysis of—oh, who are we kidding: Samurai sword fights on motorcycles! Boban Marjanovic getting killed by a book! Jul 6, 2018 - Keanu Reeves Reveals The Meaning Behind The Title JOHN WICK 3: PARABELLUM. We've got a title, and Reeves has an explanation. parabellum (plural parabellums) . From Latin adage 'si vis pacem, para bellum' (if you want peace, prepare for war) . parabellum m (plural parabellums). Parabellum is a Los Angeles-based leather goods company making some of the finest and most unique products on the market today.