refreeze
verb
re·freeze (ˌ)rē-ˈfrēz 
refroze (ˌ)rē-ˈfrōz ; refrozen (ˌ)rē-ˈfrō-zᵊn ; refreezing
; refrozen (ˌ)rē-ˈfrō-zᵊn ; refreezing transitive + intransitive
: to freeze again
shouldn't refreeze the meat
Ice dams form when water from melting snow runs down a roof and refreezes. 
AAA Times
AAA Times
Word History
First Known Use
1784, in the meaning defined above