engagement [ɪnˈgeɪdʒmənt]

以下由轻松背单词网站提供

n.订婚，婚约，约定，约会

an agreement to marry someone

I can't see you on Monday because I have a previous engagement. 星期一我不能见你，因为我有约在先。
It was my mother's very own engagement ring. 这正是我母亲自己的订婚戒指。