Definitions

1. noun

A small rounded elevation or bulge on the surface of the brain, especially one that is involved in sensory or motor functions.

“The neuroscientist studied the colliculus of a rat to understand its role in auditory processing.”

2. noun

A small rounded hill or mound of earth, especially one that is formed by geological processes.

“The hikers climbed up to the top of the colliculus for a breathtaking view of the surrounding landscape.”