According to Chambers Dictionary, a robot is a computer controlled machine able to perform complex tasks such as welding.  In fact, the latest generation is capable of much more than this, and companies such as Dyson and Gtech are now designing specific robots to help pensioners with a variety of tasks which they may find tedious or tiring.

Among these are

growbots, hoebots, sowbots and mowbots for gardening

doughbots for bread making

knowbots for pub quizzes

woebots for funerals

blowbots for sexual gratification

gobots for constipation