handle

noun
  1. The part of an object designed to be held in order to use or move it. noun
    She grasped the handle of the suitcase and lifted it off the ground.
    The door handle was cold to the touch.
  2. A name or nickname, especially one used in online or radio communication. noun
    His online handle is 'TechGuru42'.
    She goes by the handle 'StarGazer' in the chat room.
  3. To manage, deal with, or be responsible for something. verb
    She can handle the pressure of a demanding job.
    He handled the situation with great skill.
  4. To touch, hold, or move something with the hands. verb
    Please handle the fragile items with care.
    He handled the antique vase carefully.