Its a jingle bell with a bow on top. It has ball that dangles inside, which causes the bell to make a noise.
This Jingle Bell 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 6,200 icons, all in the same style and quality.