There is a square shape with identical sides. In the interior of the square are the letters 'fl.' The F is capitalized and the L is lower case. It looks like a key on a keyboard.
This Adobe Flash 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 6,000 icons, all in the same style and quality.