The icon is a picture of a wharf. The icon is in the shape of what appears to be a beat inside of a docking type of station. The boat looks to be held down by either ropes or chains to the bottom siding of the docking station.
This is the Wharf 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.