Correct spelling for the English word "occulus" is [ˈɒkjʊləs], [ˈɒkjʊləs], [ˈɒ_k_j_ʊ_l_ə_s] (IPA phonetic alphabet).
There is no dictionary definition available for the word "occulus." It is possible that the word you are referring to is "oculus."
Oculus is a noun with Latin origins, predominantly used in the field of architecture. It refers to a circular or oval window or opening in a building, often serving a decorative or artistic purpose, sometimes allowing light or ventilation into the enclosed structure. The word "oculus" means "eye" in Latin, which encapsulates the concept of a round or eye-like structure.
In classical architecture, an oculus can often be found in the center of a dome or vaulted ceiling. These circular openings provide an aesthetically pleasing focal point while also allowing natural light to enter and illuminate the space below. Oculus can also be found in facades and walls, enhancing architectural designs with their unique shapes and patterns.
Moreover, "oculus" is also used metaphorically in art and literature to refer to anything that resembles an eye or eye-like feature. It can symbolize watchfulness, perception, or insight.
Overall, oculus is a term primarily used in the realm of architecture to describe circular or oval windows or openings, but it can also carry broader connotations symbolically in various contexts.