A drain is a type of hole, usually attached to a drainpipe, where water can escape from somewhere like a bath, washbasin or road. The entrance to a drain is usually covered by a grate.
You can use the word drain to describe the process of the water leaving somewhere, or the hole through which the water escapes.
You can use the word drain to describe the process of the water leaving somewhere, or the hole through which the water escapes.