An engineer or scientist, especially one engaged in technological or military research.
A person with specialized knowledge or skills, especially one who is socially awkward; (in a weaker sense) an intellectual; a smart person.
A centre of intellectual or industrial force, activity, etc.
An encapsulated collection of nerve cell bodies, typically linked by synapses, and often forming a swelling on a nerve fiber.
Any of certain masses of gray matter in the central nervous system, as the basal ganglia.
A benign cystic tumour on a tendon sheath or joint capsule.