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
Technically, a cramp is a kind of muscle spasm that is brief and tends to relax relatively quickly, but the two terms are often used interchangeably. There are many types of spasms and several different underlying causes, so diagnosing repeated episodes is sometimes difficult.