noun

• (computing) A program that provides services to other programs or devices, either in the same computer or over a computer network.
• (computing) A computer dedicated to running such programs.
  "Now we are liberal with our innermost secrets, spraying them into the public ether with a generosity our forebears could not have imagined. Where we once sent love letters in a sealed envelope, or stuck photographs of our children in a family album, now such private material is despatched to servers and clouds operated by people we don't know and will never meet."
• (social media) A community space where only those who joined it can communicate in channels.
  "Please take a look at my log its completely going haywire… My server is changing the admin name and doesn’t store any created channels."
• One who serves.