McClellan[1987] defined a robot as a tool having 5 characteristics

• Mobility to move alone, exquisiteness in work performance to conduct assigned work carefully, transporting ability to transport things or tools, artificial intelligence by data and programs and sensibility using video/audio sensor and palpi

The meaning of a robot in the encyclopedia

Common noun

• A robot is a machine to move and perform certain tasks automatically - (its appearance is similar to a human). A mechanical man
• A device working automatically
• A robot implies a man who is controlled by others without its own subjectivity.
  * Source_ Robot Design & Production based on Linux, Kim Sang-heon and others