Oxford Dictionary English warrant officer noun noun BrE BrE//ˈwɒrənt ɒfɪsə(r)// ; NAmE NAmE//ˈwɔːrənt ɑːfɪsər// The navy Add to my wordlistjump to other results a member of one of the middle ranks in the army, the British air force and the US navy Warrant Officer Gary Owen See related entries: The navySee warrant officer in the Oxford Advanced American DictionaryCheck pronunciation: warrant officer oxfordlearnersdictionaries.com