From HomoExcelsior

1. the vertex of a mountain. 2. The highest point of the skull. 3. The top of the head. 4. The highest point reached in the apparent motion of a celestial body. 5. The point at which the sides of an angle intersect. 6. The point on a triangle or pyramid opposite to and farthest away from its base. 7. A point on a polyhedron common to three or more sides.

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