- A brilliantly burning sphere. (noun)
- A highly luminous, intensely hot spherical cloud of dust, gas, and vapor generated by a nuclear explosion. (noun)
- A meteor that is as bright or brighter than the brightest planets. (noun)
- See ball of fire. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.