The ornamental design for a servingbowl, as shown and described.
FIG. 1 is a top front left side perspective view of a serving bowl showing my design;
FIG. 2 is a bottom rear right side perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a front elevation view thereof; and,
FIG. 6 is a cross section view of the article taken along the line “6”-“6” of FIG. “2”.
The broken lines shown in the figures represent portions of the article that form no part of the claimed design. The broken line showing immediately adjacent the shaded areas represents boundaries to the claimed design and forms no part of the claimed design.