rearm Syllabification: (re·arm)Pronunciation: /rēˈärm/Translate rearm | into German | into Italian | into Spanish Definition of rearm verb [with object] provide with a new supply of weapons:his plan to rearm Germany [no object] acquire or build up a new supply of weapons. Derivatives rearmamentPronunciation: /rēˈärməmənt/ noun rearm in other Oxford dictionaries Definition of rearm in the British & World English dictionary