The ornamental design for a knife, as shown and described.
FIG. 1 is a side elevational view of a knife showing my new design as
embodied in a chef's knife, the opposite side being of substantially the
same appearance;
FIG. 2 is a side elevational view of a knife showing my new design as
embodied in a sandwich knife, the opposite side being of substantially the
same appearance;
FIG. 3 is a side elevational view of a knife showng my new design as
embodied in a utility knife, the opposite side being of substantially the
same appearance;
FIG. 4 is a side elevational view of a knife showing my new design as
embodied in a paring knife, the opposite side being of substantially the
same appearance;
FIGS. 5 through 20 are shown on an enlarged scale of FIGS. 1 through 4 for
purpose of clarity of illustration.