plural of foo

A surname from German.

(informal) The Foo Fighters, an American rock band.

Alternative spelling of fufu

(historical, obsolete) Alternative form of fu: an administrative subdivision of imperial China; the capital of such divisions.

(programming) A metasyntactic variable used to represent an unspecified entity. If part of a series of such entities, it is often the first in the series, and followed immediately by bar.

Expression of disappointment or disgust.

(slang) Pronunciation spelling of fool.

Alternative spelling of foo (“fool”)

(dated, fandom slang, humorous) A mock deity of early science fiction fandom; a fannish ghod.