1. astrology border between zodiac signs: the border between two astrological star signs
2. astronomy pointed end of crescent moon: either of the pointed ends of a crescent moon or of any astronomical object appearing with the same curved shape
3. dentistry ridge on molar tooth: a ridge on the grinding surface of a molar tooth that helps in grinding and chewing food
4. anatomy flap of valve: a triangular fold or flap of a valve in the heart or in lymph vessels that allows the flow of blood or lymph in one direction only
5. botany pointed end: a pointed end of a leaf or other plant part
6. architecture pointed projection in Gothic architecture: a pointed projection formed by the intersection of two arcs, found especially in Gothic architecture
7. mathematics point of intersection: a point where two arcs or branches of a curve intersect and the two tangents to the curve coincide
