The ornamental design for a bottledrainer, as shown and described.
FIG. 1 is a perspective view of a bottle drainer, showing our new design in an expanded configuration;
FIG. 2 is a front elevational view of FIG. 1;
FIG. 3 is a rear elevational view of FIG. 1;
FIG. 4 is a right-side elevational view of FIG. 1;
FIG. 5 is a left-side elevational view of FIG. 1;
FIG. 6 is a top plan view of FIG. 1;
FIG. 7 is a bottom plan view of FIG. 1;
FIG. 8 is a perspective view thereof, illustrated in a collapsed configuration; and,
FIG. 9 is a top plan view of FIG. 8.
The broken lines showing a bottle, cup and bottle cap in FIG. 1 depict environmental matter and form no part of the claimed design. The remaining broken lines shown in a bottle cap holder of the base depict portions of the bottle drainer that form no part of the claimed design.