This icon is meant to represent a microphone. It uses a circle with a line through it to represent the business end of the microphone and a tapering rectangle of uneven sides to represent the handle. There is a small line running parallel to the sides of the handle that represents the power switch and curved line coming out of the bottom of the handle that represents the power cord.
This is a Micro 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.