The ornamental design for an icebucket, as shown and described.
FIG. 1 is a front perspective view of an ice bucket with lid showing my new design;
FIG. 2 is a side view of the ice bucket with lid shown in FIG. 1, with the opposite side view being a mirror image thereof;
FIG. 3 is a front view of the ice bucket with lid shown in FIG. 1, with the rear view being a mirror image thereof;
FIG. 4 is a top view of the ice bucket with lid shown in FIG. 1;
FIG. 5 is a bottom view of the lid shown in FIG. 1 shown alone;
FIG. 6 is a top view of the ice bucket shown in FIG. 1 shown with the lid removed; and,
FIG. 7 is a bottom view of the ice bucket with lid shown in FIG. 1.
The broken lines showing of the line on the handle's underside, the interior portion of the bottom of the lid, the interior portion of the ice bucket, and the bottom of the ice bucket is for illustrative purposes only and forms no part of the claimed design.