It's a logo for a human bone which looks like a leg bone. The bone is tilting from left to right with a heart shape at the bottom left of the icon. On the top right the bone has been broken off an is dangling from the bone.
This is the Human Bone icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.