It's a sign to point to the direction known as North West. The outer arrow shape is pointing diagonally to the upper left, similar to the position of 10 on a clock. There are the letters NW inside the arrow shape.
This is a North West icon. We've made it in iOS style
, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 13,900 icons, all in the same style and quality.