The ornamental design for a cribbageboard, as shown and described.
FIG. 1 is a top perspective view of a cribbage board 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 right side elevational view thereof.
FIG. 6 is a left side elevational view thereof.
FIG. 7 is a front side elevational view thereof.
FIG. 8 is a back side elevational view thereof.
FIG. 9 is a top perspective view of an alternative configuration thereof, showing the cribbage board in an operational position; and,
FIG. 10 is a bottom perspective view of the alternative configuration thereof.
The broken lines shown in FIGS. 9 and 10 are included for purposes of illustrating the environment in which the cribbage board is used, and form no part of the claimed design.