In Western tradition, an engagement ring is a ring worn by a woman indicating her engagement to be married. Conventionally, the ring is presented as a betrothal gift by a man to his prospective spouse while he proposes marriage or directly after she accepts his marriage proposal. It represents a formal agreement to future marriage.

在西方的传统习俗中，订婚戒指一般是由女方佩戴用来显示其订婚待嫁的身份。一般来说，男方会在向女方求婚或者女方答应求婚后将戒指作为礼物在订婚仪式上送给女方。这个戒指代表正式的婚约。

In the United States and Canada today it is becoming more common, but still rare, that a woman will also buy her partner an engagement ring at the time of the engagement. These may be called male engagement rings or mengagement rings, which is a portmanteau of "man" and "engagement ring".

如今，在美国和加拿大，女方也开始流行在订婚时给男方送订婚戒指，不过，这种现象目前还不是太普遍。这种女方送给男方的订婚戒指叫做男士订婚戒（male engagement ring或者mengagement ring），mengagement ring是man（男士）和engagement ring（订婚戒）两个词的合成形式。