Hot iron is a phrase that can have different meanings depending on the context in which it is used. It can refer to a metal tool used for ironing clothes, a branding iron used to mark livestock, or a hot poker used to cauterize wounds. Some synonyms for hot iron include heated metal, searing rod, scorching branding iron, burning iron, and red-hot poker. Each of these synonyms describes a tool that is hot and can cause burn injuries if not handled properly. Regardless of the variation in their meaning, all hot irons should be handled carefully to avoid injuring oneself or others.