Definitions

1. noun

one of the four cavities in the brain that contain cerebrospinal fluid, or one of the four chambers of the heart that pump blood.

“The doctor explained that the patient’s brain had suffered damage to one of its ventricles.”

2. noun

a part of an organ or other anatomical structure resembling a cavity, especially one containing fluid.

“The biologist studied the ventricles in a sea sponge to better understand its unique structure.”