Oxford Dictionary English rear admiral noun noun BrE BrE//ˌrɪər ˈædmərəl// ; NAmE NAmE//ˌrɪr ˈædmərəl// The navy Add to my wordlistjump to other results an officer of very high rank in the navy Rear Admiral Baines See related entries: The navySee rear admiral in the Oxford Advanced American DictionaryCheck pronunciation: rear admiral oxfordlearnersdictionaries.com