A snapline is a tool used in construction and woodworking to mark straight lines. It is essentially a string or cord that is stretched along a surface and then snapped to create a straight line. However, there are other synonyms for snapline that may be more commonly used depending on the specific application. Some of these synonyms include chalk line, string line, and builder's line. These terms all refer to a similar tool and are often used interchangeably. Regardless of the terminology used, the snapline remains an important and useful tool for creating precise and straight lines in various settings.