The ornamental design for a golfclubhead, as shown and described.
FIG. 1 is a rear, heel-side, top perspective view of the golf club head;
FIG. 2 is a top plan view thereof;
FIG. 3 is a heel-side elevational view thereof;
FIG. 4 is a toe-side elevational view thereof; and,
FIG. 5 is a rear elevational view thereof.
The broken lines depict parts of the golf club head that form no part of the claimed design. The dot-dash chain lines depict boundaries of the claimed subject matter and form no part of the claimed design.