The ornamental design for a ceilingfan, as shown and described.
FIG. 1 is a top perspective view of a ceiling fan, showing my new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof;
FIG. 5 is a front side view thereof;
FIG. 6 is a rear side view thereof;
FIG. 7 is a right side view thereof; and,
FIG. 8 is a left side view thereof.
The broken lines illustrate portions of the ceiling fan that form no part of the claimed design. The ceiling fan blades are shown with a symbolic break in their length. The appearance of any portion of the ceiling fan blades between the break lines forms no part of the claimed design.