Sink

[0001]FIG. 1 is an upper perspective view of a sink showing my new design;

[0002]FIG. 2 is a lower perspective view thereof;

[0003]FIG. 3 is a top view thereof;

[0004]FIG. 4 is a bottom view thereof;

[0005]FIG. 5 is a front view thereof;

[0006]FIG. 6 is a rear view thereof;

[0007]FIG. 7 is a left side view thereof; and,

[0008]FIG. 8 is a right side view thereof.

[0009]The sink is shown with dash-dot-dash symbolic breaks in its length, width and height. The appearance of any portion of the sink between the dash-dot-dash symbolic break lines forms no part of the claimed design. The evenly-dashed broken lines show portions of the sink and form no part of the claimed design.