(anatomy) A large vein or passage (as the canal of Schlemm) for venous blood. / (anatomy) Alternative form of sinus venosus.

(basketball, derogatory) The accumulation of nine or fewer each of points, rebounds and assists a single game.

(anatomy) Either of two large venous sinuses of the cranium that begin at the bony protuberance on the middle of the inner surface of the occipital bone at the intersection of its bony ridges and that terminate at the jugular foramen on either side to become the internal jugular vein.

(anatomy) Any of numerous venous channels (as the sagittal sinuses, straight sinus, and transverse sinuses) that are situated between the two layers of the dura mater, that have no valves, and that drain blood from the brain and the bones forming the cranium and empty it into the internal jugular vein.

(anatomy) A venous sinus of the brain that is located along the line of junction of the falx cerebri and tentorium cerebelli, is formed by the junction of the great cerebral vein and the inferior sagittal sinus, and passes posteriorly to terminate in the confluence of sinuses.

(anatomy) Either of two venous sinuses of the dura mater.

(anatomy) Synonym of dural venous sinus.

(anatomy) Either of two venous sinuses on each side of the base of the brain.

(anatomy) The smaller of the two petrosal sinuses that is situated superiorly and connects the cavernous and transverse sinuses of the same side.

(anatomy) The larger of the two petrosal sinuses that is situated inferiorly in a sulcus on each side formed by the junction of the petrous portion of the temporal bone and the basilar portion of the occipital bone and that extends from the posterior inferior end of the cavernous sinus through the jugular foramen to join the internal jugular vein of the same side.