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firebug

American  
[fahyuhr-buhg] / ˈfaɪərˌbʌg /

noun

Informal.
  1. arsonist; incendiary; pyromaniac.


firebug British  
/ ˈfaɪəˌbʌɡ /

noun

  1. informal a person who deliberately sets fire to property

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of firebug

An Americanism dating back to 1870–75; fire + bug 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

When they turned up to a job, they didn’t want to know the local rumours about Firebug X or Y. Nothing but the uncannily expressive evidence concerned them.

From The Guardian • May 24, 2019

This grassroots event runs across 10 city venues from Firebug bar to the O2 Academy, with complimentary shuttle buses ferrying wristband-holders around Leicester.

From The Guardian • Apr. 19, 2019

One marathon swimmer, Andrew Malinak of Seattle, used Firebug, a Web development tool that inspects code, to glean Nyad’s GPS data from the swimmer’s official Web site.

From New York Times • Sep. 9, 2013

Which suggests it may be time to fire Smokey the Bear and hire some new symbolic mascot like Sparky the Firebug.

From Time Magazine Archive

Maxy the Firebug says that Mammon's sway Is stringing Virtue to a fare-ye-well, But wait, he says, till Labor with a yell Soaks Mam a crack forninst the vertebray.

From The Love Sonnets of a Car Conductor by Irwin, Wallace