Vietnamese Etymology Sino-Vietnamese word from 投軍. Pronunciation (Hà Nội) IPA(key): [ʔɗəw˨˩ kwən˧˧] (Huế) IPA(key): [ʔɗəw˦˩ kwəŋ˧˧] (Saigon) IPA(key): [ʔɗəw˨˩ wəŋ˧˧] Verb đầu quân (archaic) to join the army; to enlist to join (a unit, an organisation, etc.)Wikiwand - on Seamless Wikipedia browsing. On steroids.