downcurve
/ˈdaʊnˌkɜrv/Definitions
1. noun
A downward curve or bend, especially in a design or a shape.
“The designer added a downcurve to the edge of the building to reduce wind resistance.”
2. verb
To shape or form something with a downward curve.
“The sculptor downcurved the top of the vase to create a beautiful, unique design.”