lounge suit

The invitations, with a dress code of" uniform, morning coat or lounge suit", were sent out by first class Royal Mail.

请帖由头等的皇家邮政投递，并要求宾客身着“制服、晨礼服或套装”。

Hollywood star Depp, 47, who reprises his role as pirate Jack Sparrow in the sequel, looked distinctly retro at the world premiere in California, in a black and white lounge suit and trainers.

好莱坞影星约翰尼德普在《加勒比海盗4》中继续扮演Jack船长，昨天他一袭黑白休闲西装配运动鞋出席了在加州的首映仪式。

The invitation states guest should wear "uniform, morning coat or lounge suit". But what does that mean?

婚礼邀请函要求宾客须着“军装、晨燕尾服或日常西装”。那么，这又是些什么样的服装呢？