engagement ring

US /ɪnˈɡeɪdʒ.mənt ˌrɪŋ/
UK /ɪnˈɡeɪdʒ.mənt ˌrɪŋ/
"engagement ring" picture
1.

a ring given by a man to a woman to mark their engagement to be married

:
He proposed with a beautiful diamond engagement ring.
She proudly showed off her new engagement ring.