Is the phrase "move over" an official English idiom known worldwide? I would like to know:
- Is it an official English idiom (not slang or colloquial)?
- Is it known outside of the US (e.g. in the UK, Australia, India)?
- Does it have any multiple meanings? Does it have any ambiguousness?
- How likely it is for a non-native English speaker to know what this idiom means?
- What is its official meaning? (is it "make way" or "move aside")
Can it mean "move toward"?