| BRAIN | • brain n. The control center of the central nervous system of an animal located in the skull which is responsible… • brain n. (Informal) An intelligent person. • brain n. (In the plural) Intellect. |
| ENDBRAIN | • endbrain n. (Neuroanatomy) The anterior part of the forebrain; the telencephalon. • ENDBRAIN n. a part of the brain. |
| MADBRAIN | • madbrain n. (Archaic) A rash or hotheaded person. • MADBRAIN n. (Shakespeare) a rash or insane person. |
| MIDBRAIN | • midbrain n. (Neuroanatomy) A part of the brain located rostral to the pons and caudal to the thalamus and the basal… • MIDBRAIN n. the middle region of the brain. |
| PEABRAIN | • peabrain n. (Derogatory, informal) a stupid or clumsy person; a cretin. • peabrain n. (Derogatory, informal) the brain of such a person. • peabrain adj. (Derogatory, informal) stupid, clumsy, idiot. |
| BIRDBRAIN | • birdbrain n. (Colloquial) Someone who is not intelligent. • bird␣brain n. Alternative form of birdbrain. • BIRDBRAIN n. one of very limited intelligence. |
| FOREBRAIN | • forebrain n. (Neuroanatomy) The anterior part of the brain, including the cerebrum, thalamus, and hypothalamus. • FOREBRAIN n. the anterior region of the embryonic brain. |
| HINDBRAIN | • hindbrain n. (Neuroanatomy) The posterior part of the brain, comprising the cerebellum, pons and medulla, the rhombencephalon. • HINDBRAIN n. the posterior of the three principal divisions of the brain. |
| LAMEBRAIN | • lamebrain n. (Slang, derogatory) A fool. • lame-brain n. Alternative form of lamebrain. • lame␣brain n. Alternative form of lamebrain. |
| AFTERBRAIN | • afterbrain n. (Anatomy) A posterior subdivision of the hindbrain; the myelencephalon. • AFTERBRAIN n. a nontechnical name for the myelencephalon. |
| CRACKBRAIN | • crackbrain n. (Slang) An eccentric or crazy person. • CRACKBRAIN n. a crazy person. |
| INTERBRAIN | • interbrain n. (Anatomy) The diencephalon. • INTERBRAIN n. the diencephalon. |
| SUPERBRAIN | • superbrain n. An exceptionally intelligent person; a genius. • superbrain n. An exceptionally powerful brain or artificial intelligence. • SUPERBRAIN n. an extraordinary intelligence. |
| WATERBRAIN | • WATERBRAIN n. a disease of sheep, aka gid. |
| BEETLEBRAIN | • beetlebrain n. A stupid person. • BEETLEBRAIN n. a heavy stupid person, also BEETLEHEAD. |
| RATTLEBRAIN | • rattlebrain n. A rattlebrained person. • RATTLEBRAIN n. a shallow, voluble, volatile person. |
| BETWEENBRAIN | • betweenbrain n. Alternative form of ’tweenbrain. • BETWEENBRAIN n. the diencephalon. |
| FEATHERBRAIN | • featherbrain n. Alternative spelling of feather-brain. • feather-brain n. (Derogatory) a feather-brained or stupid person, especially a woman. • FEATHERBRAIN n. a foolish scatterbrained person. |
| SCATTERBRAIN | • scatterbrain n. A flighty, disorganized or forgetful person. • SCATTERBRAIN n. a giddy heedless person. |