what is the meaning of foo in programming?

Question

what does the word foo means in programming

Answer 1

Hi! Foobar or foo is a meta variable, as well as placeholder text, used in programming or in programming-related documentation. This term is used to name variables, functions, or commands whose exact identity is not important and serves only to demonstrate the concept.

Answer 2

https://en.m.wikipedia.org/wiki/Foobar