The term "limbus" refers to the border or edge of a structure. In anatomy, it often describes the area where the cornea meets the sclera in the eye, known as the limbal region. This area plays a crucial role in maintaining the health of the cornea and is involved in the regeneration of corneal cells. In a broader context, "limbus" can also refer to a boundary or transitional space in various fields, such as philosophy or literature. It symbolizes a state of being on the edge or in between two distinct conditions, often representing uncertainty or ambiguity.