The ornamental design for a lamp, as shown and described.
FIG. 1 is a perspective view of a lamp in accordance with a first embodiment of the design;
FIG. 2 is a front view of the design shown in FIG. 1, and the rear view being a mirror image;
FIG. 3 is a left view of the design shown in FIG. 1, and the right view being a mirror image;
FIG. 4 is a bottom view of the design shown in FIG. 1;
FIG. 5 is a top view of the design shown in FIG. 1;
FIG. 6 is a perspective view of a lamp in accordance with a second embodiment of the design;
FIG. 7 is a front view of the design shown in FIG. 6;
FIG. 8 is a rear view of the design shown in FIG. 6;
FIG. 9 is a left view of the design shown in FIG. 6, and the right view being a mirror image;
FIG. 10 is a top view of the design shown in FIG. 6; and,
FIG. 11 is a bottom view of the design shown in FIG. 6.
The broken lines are for illustrative purposes only and form no part of the claimed design. Any shading forms no part of the claimed design and is provided to illustrate contour only and is not an indication of texture, gloss, surface ornamentation, and the like.