1. adjective
a) Capable of being moved, lifted, carried, drawn, turned, or conveyed, or in any way made to change place or posture; susceptible of motion; not fixed or stationary; as, a movable steam engine.
b) Changing from one time to another; as, movable feasts, i. e., church festivals, the date of which varies from year to year.
2. noun
Wikipedia foundation.