1. a small cavity or chamber in the body, especially in the heart or brain
Usage: medical; anatomical
2. the gizzard of a bird
Usage: zoological

Examples

• The ventriculus is an important part of the bird’s digestive system.
• Blood flows from the atrium into the ventriculus during the cardiac cycle.
• The anatomist pointed to the ventriculus in the brain diagram.
• Birds use their ventriculus to grind food before digestion.
• The ventriculus contains small stones that help break down seeds.
• Medical students must learn the function of each ventriculus in the heart.