(neurology, medicine) A chronic neurological disorder affecting movement, characterized by tremor, slowness of movement (bradykinesia), cogwheel or lead-pipe rigidity, and postural instability.

(informal) A girl who is particularly successful, talented, or otherwise remarkable.

In an interfacial way.

(physics, chemistry) A metamaterial, a cluster of atoms which acts like a single atom. It seems to exhibit some of the properties of elemental atoms.