The ornamental design for a hammock, as shown and described.
FIG. 1 is a front and top perspective view of a hammock, showing my new design;
FIG. 2 is a rear and bottom perspective view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is right side elevational view thereof;
FIG. 7 is a top plan view thereof;
FIG. 8 is a bottom plan view thereof; and,
FIG. 9 is an enlarged view of a portion labeled “FIG. 9” in FIG. 1; FIG. 10 is an enlarged view of a portion labeled “FIG. 10” in FIG. 1; and FIG. 11 is an enlarged view of a portion labeled “FIG. 11” in FIG. 1.
The dashed broken lines in the figures illustrate portions of the hammock that form no part of the claimed design. The dot-dash-dot lines in FIGS. 1, 9-11 represent cutting lines of enlarged views and form no part of the claimed design.