cistern(redirected from subarachnoid cistern)
Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
Related to subarachnoid cistern: bruit, Patellar tendon, cisterna ambiens
A container for the collection of rainwater. Many historic homes had gutters and downspouts that routed all water into a cistern beneath the house to be used as a water source for cooking,cleaning,and in the event of fire.