Definition of foo fighter in English:

foo fighter

Line breaks: foo fight¦er
Pronunciation: /ˈfuː ˌfʌɪtə
 
/

noun

  • An unidentified flying object, originally one of a kind reported by US pilots during the Second World War, usually described as a bright light or ball of fire.
    More example sentences
    • The above is a typical example of an encounter with a ‘foo fighter.’
    • Some RCAF buddies talk about the foo fighters they saw over Europe in the last real war.

Origin

1940s: from ‘Where there's foo there's fire’, a nonsense catchphrase from the US Smoky Stover cartoon strip.

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