The ornamental design for a hammock, as shown and described.
FIG. 1 is a perspective view of a hammock showing my new design;
FIG. 2 is a top view thereof;
FIG. 3 is a bottom view thereof;
FIG. 4 is another perspective view thereof;
FIG. 5 is a partially enlarged view showing the area “A” in FIG. 2 in a connected configuration; and,
FIG. 6 is a partially enlarged view showing the area “A” in FIG. 2 in a detached configuration.
The rods at both sides of the hammock are detachable as shown in FIG. 6.
In FIG. 1, the broken line showing of the hammock stand is for the purpose of illustrating the environmental structure and forms no part of the claimed design.
In FIG. 2, FIG. 5 and FIG. 6, the broken lines indicating an enlargement portion of the design form no part of the claimed design.