It's an icon of a bunch of grapes with a short stem still attached. The stem is at the top and cut off at the very top, where there are eight circles evenly spaced representing each of the hanging grapes.
This is a Grapes 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 13,300 icons, all in the same style and quality.