purse ring
/ˈpəːs rɪŋ/noun
1A ring, or one of two sliding rings, with which a purse may be closed. Now rare.
2Each of the rings attached to the mouth of a purse seine, through which the purse line runs.
Origin
Mid 16th century; earliest use found in Thomas More (1478–1535), lord chancellor, humanist, and martyr. From purse + ring.