What is the meaning of ATTRIBUTE?

I have seen the term Attribute lot many time but never understood it properly. Somewhere it was mentioned that its an instance variable, somebody in a discussion said that its the method in class., some said that its an argument.
Can anybody simplify me this term by giving proper example with codes.

The docs have a good description of how attribute is used-
https://docs.python.org/3/tutorial/classes.html#python-scopes-and-namespaces
Or for the short version, the glossary-
https://docs.python.org/3/glossary.html