the portion of the central nervous system that constitutes the organ of thought and neural coordination, is enclosed within the skull, and is continuous with the spinal cord
the portion of the vertebrate central nervous system that constitutes the organ of thought and neural coordination, is made up of neurons and supporting and nutritive structures, is enclosed within the skull, and is continuous with the spinal cord
a nervous centre in invertebrates comparable in position and function to the vertebrate brain
(usu in pl) this part of an animal's brain used as food
the intellect or mind
a good brain
(in pl) intellectual endowment; intelligence
informal a highly intelligent or intellectual person
(the brain/the brains) informal the person chiefly responsible for an organization or enterprise
an automatic device, e.g. a computer, that performs one or more of the functions of the human brain for control or computation
informal to have a snatch of music, song, or verse constantly recurring in one's head
to make a great mental effort; to think hard