killbit

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noun

A setting that disables a specific web browser plug-in, typically to prevent a security vulnerability from being exploited.

Scrabble 13
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Meanings

nounkillbit (plural killbits)

plural killbits · alternative kill bit

  1. computingA setting that disables a specific web browser plug-in, typically to prevent a security vulnerability from being exploited.

    It is time for Adobe to announce the end-of-life date for Flash and to ask the browsers to set killbits on the same day.

    2015 July 14, Samuel Gibbs, “Facebook calls for end to Flash as Firefox blocks it over hacking holes”, in The Guardian

Origin

From kill + bit; see bit (“binary digit”), i.e. an on/off setting.

Full word history & related roots →
Cite this entry
APA

killbit. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/killbit

MLA

“killbit.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/killbit. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “killbit,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/killbit.

Source: killbit on Wiktionary, CC BY-SA 4.0.