This icon is depicting the head of a horse within a diamond shaped sign. The head of the horse occupies most of the space within the diamond and is facing profile towards the right.
This Horses Sign 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 5,700 icons, all in the same style and quality.