Showerhead

FIG. 1 is a perspective view of the claimed design; FIG. 2 is a top view of the claimed design shown in FIG. 1 ; FIG. 3 is a bottom view of the claimed design shown in FIG. 1 ; FIG. 4 is a side view of the claimed design shown in FIG. 1 ; FIG. 5 is another side view of the claimed design shown in FIG. 1 ; FIG. 6 is a front view of the claimed design shown in FIG. 1 ; FIG. 7 is a rear view of the claimed design shown in FIG. 1 ; and, FIG. 8 is a cross-sectional view of the claimed design shown in FIG. 1 taken along line 8 - 8 of FIG. 6 . 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.