The term "sacral" refers to anything related to the sacrum, a triangular bone located at the base of the spine. The sacrum is formed by the fusion of five vertebrae and connects the spine to the pelvis. It plays a crucial role in supporting the weight of the upper body and providing stability during movement. In a broader context, "sacral" can also pertain to sacred or religious aspects, often associated with rituals or beliefs. This usage is common in discussions about sacral architecture, which refers to buildings designed for religious purposes, such as churches or temples.