fissure : Idioms & Phrases

• noun a sulcus in the mesial surface of the occipital lobe of the cerebrum
  calcarine sulcus.
  

WordNet

• (Anat.), the furrows or clefts by which the surface of the cerebrum is divided; esp., the furrows first formed by the infolding of the whole wall of the cerebrum.

Webster 1913

• (Surg.) Same as Contrafissure.

Webster 1913

• (Surg.), a spiral needle for catching together the gaping lips of wounds. Knight.

Webster 1913

• noun a brain fissure extending upward on the lateral surface of both hemispheres; separates the frontal and parietal lobes
  sulcus centralis; fissure of Rolando; central sulcus.
  

WordNet

• (Anat.), the furrow separating the frontal from the parietal lobe in the cerebrum.

Webster 1913

• noun the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres
  sulcus lateralis cerebri; lateral cerebral sulcus; fissure of Sylvius.
  

WordNet

• (Anat.), a deep cerebral fissure separating the frontal from the temporal lobe. See Illust. under Brain.

Webster 1913

• (Mining), a crack in the earth's surface filled with mineral matter. Raymond.

Webster 1913

• noun the opening through which food is taken in and vocalizations emerge
  oral cavity; mouth; rima oris.
  
  • he stuffed his mouth with candy

WordNet

• noun a sulcus near the posterior end of each hemisphere that separates the parietal lobes and the occipital lobes in both hemispheres
  parieto-occipital sulcus.
  

WordNet

• noun a brain fissure extending upward on the lateral surface of both hemispheres; separates the frontal and parietal lobes
  sulcus centralis; fissure of Rolando; central sulcus.
  

WordNet

• noun the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres
  sulcus lateralis cerebri; lateral cerebral sulcus; fissure of Sylvius.
  

WordNet