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
A leg cramp is a sudden, uncontrolled contraction of a muscle. This type of pain is most commonly experienced in the lower extremity, and therefore often called a leg cramp or a charley horse. Leg cramps occur when the muscle suddenly and forcefully contracts. The most common muscles to contract in this manner are muscles that cross two joints.