= process by which substances become soft, often as a result of a higher temperature

literally: (one's) heart melts; hence: = state in which humans lose all courage

literally: to make (someone's) heart melt; hence: = causative process by which humans cause other humans to lose all courage

literally: to melt; hence: = process by which liquids flow from an object as if the object itself is melting away

literally: to melt; hence: = process by which people or objects to vanish from existence