A "microphone stand" is a device used to hold a microphone in place so that it doesn't need to be held by a person while speaking or singing. Full definition
During periodic moments of silence on the audio track, the single microphone standing in the middle of the installation invites you to speak up and add your own dialogue to the work. (naimajkeith.com)
A lone microphone stand stood at the front of the room, in full view of the judges and the audience. (sciencemag.org)
The music stage is defined by its sheer functionality, typically adorned only with props such as microphone stands, audio monitors, and lighting, while equipment for amplification and mixing is placed in the audience to avoid the jarring noise of acoustical interference. (sfmoma.org)