1.
Red-hot metal or rock has been heated to such a high temperature that it has turned red.
...~ iron.
ADJ: usu ADJ n
2.
A ~ object is too hot to be touched safely.
In the main rooms ~ radiators were left exposed.
ADJ
3.
Red-hot is used to describe a person or thing that is very popular, especially someone who is very good at what they do or something that is new and exciting. (JOURNALISM)
Some traders are already stacking the ~ book on their shelves.
ADJ: usu ADJ n