Meaning of the word foo in English

What does foo mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

foo

US /fuː/
UK /fuː/

Noun

a placeholder name used in computing and programming, often in examples or as a generic variable

Example:
Let's use 'foo' as the name for our first variable.
The function takes two arguments, 'foo' and 'bar'.
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