In anatomy, a canal for the conduction of liquid. For example, the cerebral aqueduct of Sylvius connects the third and fourth ventricles of the brain.
A tube which carries fluid from one part of the body to another.
Canal or channel; medically, refers to any of several normal round anatomical pathways for the flow of various body fluids. For example, the cerebral aqueduct connects the third and fourth ventricles in the brain and allows cerebrospinal fluid to flow freely. Obstruction of this duct may lead to swelling and hydrocephalus.
A canal containing fluid. For example, the aqueduct of the midbrain (cerebral aqueduct, aqueduct of Sylvius) connects the third and fourth ventricles.