a. 1. Incapable of being moved; firmly fixed; fast; -- used of material things; as, an immovable foundation. [ 1913 Webster ]

Immovable, infixed, and frozen round. Milton. [ 1913 Webster ]

2. Steadfast; fixed; unalterable; unchangeable; -- used of the mind or will; as, an immovable purpose, or a man who remains immovable. [ 1913 Webster ]

3. Not capable of being affected or moved in feeling or by sympathy; unimpressible; impassive. Dryden. [ 1913 Webster ]

4. (Law.) Not liable to be removed; permanent in place or tenure; fixed; as, an immovable estate. See Immovable, n. Blackstone. [ 1913 Webster ]

Immovable apparatus (Med.), an appliance, like the plaster of paris bandage, which keeps fractured parts firmly in place. --
Immovable feasts (Eccl.), feasts which occur on a certain day of the year and do not depend on the date of Easter; as, Christmas, the Epiphany, etc. [ 1913 Webster ]

n. 1. That which can not be moved. [ 1913 Webster ]

2. pl. (Civil Law) Lands and things adherent thereto by nature, as trees; by the hand of man, as buildings and their accessories; by their destination, as seeds, plants, manure, etc.; or by the objects to which they are applied, as servitudes. Ayliffe. Bouvier. [ 1913 Webster ]

n. Quality of being immovable. [ 1913 Webster ]