The term 'Oculus' is derived from the Latin word for EYE, and is often used to refer to the EYE in anatomy. In crossword puzzles, it is typically represented by the three-letter word 'EYE'. Oculus is a term that is used to describe the EYE, both in terms of its anatomy and its function. It is also used to refer to the organ of sight, which is responsible for vision. The oculus is an important part of the human body, as it allows us to see the world around us.