What is the definition or description of: calf pain?

Literally, it just: Means a pain in the calf. This can be from muscle strain, a clot in a vein, a torn tendon, infection or a host of several other problems, including referred pain from someplace higher up, like the lower back. The best starting place for calf pain is your primary medical doctor, who can then make an appropriate referral depending on what he or she feels it might be.