Watchhttp://www.youtube.com/watch?v=PjWvdO-mHRo

A watch is a device with which we tell the time. It's different to a clock, which is also a device with which we tell the time, in that you carry a watch with you. Clocks tend to stay in one place. You can have a wrist watch which, unsurprisingly, is worn on the wrist, and you can have a pocket watch, which is carried... You've got it... in your pocket. And watch is also a verb that is used in many expressions in English. For example: Can you watch the children? I'm going to watch a DVD. I'm going bird watching. But what am I going to watch if I watch my back, my mouth, my step, or myself?