to grasp a concept; to understand the logic of something; to see the point of a matter
to clear the orifices
(Chinese medicine) to clear or open the sensory orifices of the body, such as the eyes, ears, nose, or mouth
to open orifices
(of a creature, especially in mythology) to open or bore the physical apertures of the head (eyes, ears, nostrils, mouth), as in the story of 浑沌húndùn in the Zhuangzi
