IPA: /ˈfaɪərˌbɔːl/
KK: /ˈfaɪərˌbɔl/
A round mass of fire or light, often seen in the sky or as a result of an explosion.
The wizard cast a fireball that illuminated the entire battlefield.
Fireball → It is formed from "fire" (from Old English "fyr", meaning flame or heat) and "ball" (from Old English "beall", meaning a round object). The word "fireball" describes a round object made of fire or a ball of flame.
Imagine a round object that is made of flames — that's what a fireball is, combining the heat of 'fire' and the shape of a 'ball'.