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
Learner's definition of CLAMP. [+ object] 1. : to hold or press (things or parts of a thing) tightly together with a device : to fasten or tighten (something) with a clamp. The surgeon clamped the vein. He clamped the two pieces of wood together.