клекало = bowl or pan

The bowl, or pan, of a WC is the receptacle into which body waste is excreted, usually made of vitreous china, but sometimes made of stainless steel or composite plastics. WC bowls may be pedestal (free-standing), cantilever (wall-hung) or squat in design. There are several types of pan in common use: washdown, washout, and siphon. In less common use is the valve closet.

http://en.wikipedia.org/wiki/Flush_toilet