'left brain' definitions:

Definition of 'left brain'

(from WordNet)
noun
The cerebral hemisphere to the left of the corpus callosum that controls the right half of the body [syn: left hemisphere, left brain]

Definition of 'left brain'

From: GCIDE
  • left brain \left" brain`\, n. The left cerebral hemisphere of the brain; in humans, it controls motor activity on the right side of the body, and in most people is the primary location for control of language, logic, and mathematical thought. [PJC]

Words containing 'left brain'