The icon is shaped simply like a tear drop falling downwards. The bottom of the shape is a curved semi circle and the top part of it is pointed like a triangle.
This Blur icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,000 icons, all in the same style and quality.