In the natural sciences, a primary source could be defined as a report of original findings or ideas. These sources often appear in the form of research articles with sections on methods and results..
crampon - a hinged pair of curved iron bars; used to raise heavy objects crampoon grapnel, grapple, grappling hook, grappling iron, grappler - a tool consisting of several hooks for grasping and holding; often thrown with a rope
Definition of clamp. 1  1 : a device designed to bind or constrict or to press two or more parts together so as to hold them firmly. 2  2 : any of various instruments or appliances having parts brought together for holding or compressing something.