Fireballs

noun

1. A ball of fire, especially one associated with an explosion.
2. A meteor bright enough to cast shadows.
3. A class of sailing dinghy with a single trapeze and a symmetrical spinnaker, sailed by a crew of two.
4. A charge made of a disc-shaped bomb shell, with four sets of flames, at the top, bottom and on either side.
5. A ball filled with combustibles to be thrown among enemies.