de·frost 
/dɪˈfrɑ:st/ verb
de·frosts; de·frost·ed; de·frost·ing /dɪˈfrɑ:st/ verb 1 : to warm something that is frozen until it is no longer frozen [+ obj] ▪ You can defrost the soup in the microwave. [no obj] ▪ He took some fish out of the freezer to defrost [=thaw] in the fridge. — sometimes used figuratively ▪ It took a while for her to defrost [=to stop being unfriendly] and open up to us. 2 : to melt ice that has built up on the inside of a freezer or refrigerator [+ obj] ▪ defrost the freezer [no obj] ▪ Has the refrigerator defrosted yet? 3 [+ obj] : to melt ice on a car's windows by using heat
▪ defrost the windshield — compare defog, deice
▪ defrost the windshield — compare defog, deice
