The ornamental design for a brushhead, substantially as shown and described.
FIG. 1 is a perspective view of an embodiment of a brush head.
FIG. 2 is a top plan view of the embodiment of the brush head.
FIG. 3 is a right-side elevation view of the embodiment of the brush head, the opposite side being a mirror image thereof.
FIG. 4 is a bottom plan view of the embodiment of the brush head.
FIG. 5 is an enlargement taken from FIG. 1, for clarify of illustration, and is meant to illustrate the claimed surfaces as they would be applied to the entirety of the brush head upper surface; and,
FIG. 6 is a second enlargement taken from FIG. 1, for clarify of illustration, and is meant to illustrate the claimed surfaces as they would be applied to the entirety of the brush head upper surface.
The broken lines in the figures represent environmental structure and form no part of the claimed design. The circles drawn in dot-dash-dot broken lines in FIG. 5 and 6 illustrate the bounds of the enlarged detail views taken from FIG. 1 and are not part of the claimed design.