What is the definition of a “robot”?

There are many definitions of a “robot”. The classical definition among my colleagues is “a robot is a machine that senses, thinks, and acts”. For about 10 years I personally have added “communicates” to these three – recently other people have also been saying “…senses, thinks, acts, and communicates”. But for better or for worse, this definition makes most modern household appliances – clothes washing machines, etc – robots.

robot noun

ro·​bot | \ˈrō-ˌbät, -bət
plural robots

Definition of robot

1 : a machine that resembles a living creature in being capable of moving independently (as by walking or rolling on wheels) and performing complex actions (such as grasping and moving objects)
When the next space launch heads for Mars, on board will be dozens of tiny mobile robots that will fan out across the Martian landscape, exploring every nook and cranny.

2a : a device that automatically performs complicated, often repetitive tasks (as in an industrial assembly line)

2b : a mechanism guided by automatic controls

3 : a person who resembles a machine in seeming to function automatically or in lacking normal feelings or emotions