ensign
/ˈensən; `ɛnsn/ n
1
(a) (esp naval) flag or banner （尤指海军的）旗, 旗帜.
(b) (Brit) special form of the national flag flown by ships （船上挂的特种的）国旗
the red/white/blue ensign 英国商船旗[英国皇家海军旗/英国海军预备舰队旗].
2 (US) officer of the lowestrank in the navy 海军少尉. =>App 9 见附录9.
3 / ˈensaɪn;`ɛnsaɪn/ (Brit) (formerly) infantry officer who carried the regimental flag （旧时）（陆军团的）掌旗官.