The ornamental design for a broom, as shown and described.
FIG. 1 is a perspective view showing the new design for a broom;
FIG. 2 is a front view thereof, the rear view being a mirror image thereof;
FIG. 3 is a right side view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a top view thereof; and,
FIG. 6 is a bottom view thereof.
In FIG. 5, the handle, shown in broken lines in the other Figures, has been removed so that the claimed portions in the top view are visible.
The broken lines in the drawings are shown for illustrative purposes only and form no part of the claimed design. In addition, the surface shading illustrated in the drawings is provided merely to highlight the contour of design; it is not intended to be illustrative of texture or gloss.