Its from the metaphore of a burning flame. To keep a fire burning. I hope this answers your question! :)
Answer:
This means to do not add heat to the intention of arguing. Improve your arguement means to come to an understanding mutually.
Explanation:
The reader should look for context clues or synonymous words
Onomatopoeia is the formation of a word from a sound.
So basically it is
A SOUND EFFECT
