Simple Definition of firebug

from our Learner's Dictionary

firebug

noun

ˈfajɚˌbʌg

plural firebugs

US, informal : a person who starts destructive fires

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“Firebug.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/firebug. Accessed 25 Jun. 2026.

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