False Cover is a term used to describe a disguise or an act of deception. It is often used to refer to a person or group who is pretending to be something they are not in order to hide their true identity or intentions. The term can also be used to describe a situation where someone is using a false identity or cover story to gain access to a place or situation. The crossword solution for False Cover is 'GUISE', which is defined as a particular way of appearing or behaving that is meant to deceive others.