We claim the ornamental design for a lavatory, as shown and described.
FIG. 1 is a top perspective view of an embodiment of the claimed design;
FIG. 2 is a top plan view of the claimed design of FIG. 1;
FIG. 3 is a bottom plan view of the claimed design of FIG. 1;
FIG. 4 is a front view of the claimed design of FIG. 1;
FIG. 5 is a rear view of the claimed design of FIG. 1; and,
FIG. 6 is a right-side view of the claimed design of FIG. 1.
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. Dash-dot-dash lines represent unclaimed boundaries of claimed surfaces. Break lines are used in particular to indicate that no specific length is being claimed.