The ornamental design for a watercloset, as shown and described.
In a preferred embodiment, the nature of this product is a plumbing fixture which is primarily useful for receiving the liquid and solid waste of humans.
FIG. 1 is a right, top, front perspective view of a water closet embodying my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a left side elevation view thereof;
FIG. 6 is bottom plan view thereof; and,
FIG. 7 is a rear elevational view thereof.
The broken line representations in the figures are for the purpose of illustration only, and form no part of the claimed design.