A limousine is a car that is longer than a normal car.
It usually has a separate compartment at the front for the chauffeur (driver).
'limousine' and 'chauffeur' are French words borrowed into English.
This blog is mainly to explain a different English language expression every day. Sometimes I post other stuff. I also have a YouTube channel which is mostly about computer software: https://www.youtube.com/englishspacedog