Squircle

A squircle is a shape intermediate between a square and a circle. There are at least two definitions of "squircle" in use, the most common of which is based on the superellipse. The word "squircle" is a portmanteau of the words "square" and "circle". Squircles have been applied in design and optics. Squircle

• Desperately seeking squircles
• Adjust corner radius and smoothing – Figma Help Center

For generating one