What does "unkiss" mean?

To cancel or annul something that was done or sealed with a kiss.

Unkiss

verb

verb ·Rare ·Advanced level

Verb

1
To cancel or annul something that was done or sealed with a kiss. obsolete
"Let me unkiss the oath 'twixt thee and me."

"Let me unkiss the oath 'twixt thee and me."

From un- + kiss.