A flame is a hot bright stream of burning gas that comes from something that is burning.

A flame is an e-mail message which severely criticizes or attacks someone.

If someone's face flames, it suddenly looks red, usually because they are angry.

You can refer to a feeling of passion or anger as a flame of passion or a flame of anger.

If something bursts into flames or bursts into flame, it suddenly starts burning strongly.

If someone or something fans the flames of a situation or feeling, usually a bad one, they make it more intense or extreme in some way.

If something goes up in flames, it starts to burn strongly and is destroyed.

Something that is in flames is on fire.