Definitions

1. adjective

re-frozen; frozen again, typically after having been thawed

“The ice had refrozen overnight, making the roads hazardous.”

2. verb

to freeze again, typically after having been thawed

“The pipes had refrozen after the heating system malfunctioned.”

3. noun

something that has been frozen and then thawed and frozen again

“The refrozen lake surface made it difficult to walk on.”