FIG. 1 is a perspective view of the design of the present invention for a knife;
FIG. 2 is a perspective view of knife of FIG. 1 wherein the knife blade is received within the handle of a second knife of FIG. 1, the features of the second knife being shown in broken lines for illustrative purposes only and forming no part of the claimed design;
FIG. 3 is a front elevation view of the knife of FIG. 1;
FIG. 4 is a rear elevation view of the knife of FIG. 1;
FIG. 5 is a left side elevation view of the knife of FIG. 1, the right side elevation being a mirror image thereof;
FIG. 6 is a top end view of the knife of FIG. 1; and,
FIG. 7 is a bottom end view of the knife of FIG. 1.