engagement
noun uk/ɪnˈɡeɪdʒ.mənt/ us/ɪnˈɡeɪdʒ.mənt/
(MARRIAGE)
[ C ]订婚
an agreement to marry someone
They announced their engagement at the party on Saturday. 他们在周六的聚会上宣布了他们订婚的消息。
an engagement party 订婚宴会
(ARRANGEMENT)
[ C ] formal约定;约会;预约
an arrangement to meet someone or do something at a particular time
a dinner engagement 晚餐预约
I'm afraid I have a previous/prior engagement (= another arrangement already made). 对不起，我已经有约了。
(FIGHTING)
[ C or U ] military specialized交战，交火;战斗
the act of beginning to fight someone, or a period of time in a war