ocellus

Example:The trigeminal nerve is a pivot for several other nerves.

Definition:a point or place around which a thing revolves or turns; a central or pivotal point

Example:The main focus of the strategy is on sustainability.

Definition:a central point or area around which other things gather or develop; a focal point

Example:The function of the human cerebellum is a hub of motor coordination.

Definition:a central point of activity or development, around which related things gather or revolve