What is the meaning of Foo?

Alternative form of fu: an administrative subdivision of imperial China; the capital of such divisions.

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.

Alternative letter-case form of Foo (“placeholder god”).

Expression of disappointment or disgust.

Pronunciation spelling of fool.

alternative form of fange

alternative form of fo

alternative form of fo

alternative form of fo

in, inside

whoo

how

why

to stink

Source: wiktionary.org