The ornamental design for a faucetknob, as shown and described.
FIG. 1 is a top perspective view of a faucet knob showing my new design;
FIG. 2 is a side elevational view thereof, the opposite side being a mirror
image of the side shown;
FIG. 3 is another side elevational view thereof taken 90 degrees from the
side shown in FIG. 2, the opposite side being a mirror image of the side
shown;