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foo fighter

Syllabification: (foo fight·er)

Pronunciation: /fo͞o/

Definition of foo fighter

noun

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.

Origin:

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'