We claim the ornamental design for a lavatory, as shown and described.
FIG. 1 is a perspective view of an embodiment of the claimed design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a left side view thereof;
FIG. 7 is a right side view thereof;
FIG. 8 is a section view thereof taken along line 8-8 in FIG. 4;
FIG. 9 is a section view thereof taken along line 9-9 in FIG. 4; and,
FIG. 10 is a section view thereof taken along line 10-10 in FIG. 4.
The ornamental design which is claimed is shown in solid lines in the drawings. The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design. The dash-dot lines are provided to define the boundary of the claimed design and form no part of the claimed design.