What is the definition or description of: resting tremor?

Intermittant: A resting tremor usually disappears when you make a purposeful effort (reach) and returns when you sit and do nothing. It is an important feature of parkinson's disease. Please consider a neurologist to examine the tremor, as it can be an important symptom, and may benefit from medical care.

Characteristic of : Parkinson's disease where the hand shakes at rest, a "pill rolling" action, but fades when arm lifts or is used. Just one of the cardinal signs, but may be the earliest manifestation. Does respond fairly readily to medications.