What does "signet ring" mean?

A finger ring bearing a signet, seal or coat of arms.

What is a synonym for "signet ring"?

Common synonyms include: seal ring.

noun

noun ·Rare ·Advanced level

Noun

1
A finger ring bearing a signet, seal or coat of arms.
"The Baron Harkonnen has sworn to destroy House Atreides and steal the ducal signet ring for himself."
2
a ring bearing a signet wordnet

"The Baron Harkonnen has sworn to destroy House Atreides and steal the ducal signet ring for himself."