The term "fly-wall" is commonly used to describe a wall or surface covered in flies. There are several synonyms for this term, including "flypaper," "fly strip," and "sticky fly trap." These products are designed to attract and trap flies, making them an effective solution for managing fly populations in homes, businesses, and outdoor areas. Other synonyms for "fly-wall" include "infested surface" and "insect-covered wall." Regardless of the term used, it's important to take action to remove and prevent flies from infesting your home or workspace, as they can be a vector for disease and a nuisance to deal with.