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foo fighter Syllabification: foo fight·er
Pronunciation: /ˈfo͞o ˌfīdər/

Definition of foo fighter in English:


An unidentified flying object of a kind reported by US pilots during World War II, usually described as a bright light or ball of fire.
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.


1940s: from the comic strip Smokey Stover (created in 1935 by Bill Holman (1903–1987)), whose title character used the invented term to mean 'firefighter'.

Definition of foo fighter in:
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