The ornamental design for a cap for a babybottle, as shown and described.
FIG. 1 is a top-front perspective view of a cap for a baby bottle, showing my new design in a condition for use;
FIG. 2 is a top-front perspective view of the cap for a baby bottle of FIG. 1, shown enlarged for clarity of disclosure;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a top plan view thereof; and,
FIG. 5 is a bottom plan view thereof.
In FIG. 1, the evenly spaced broken lines represent unclaimed environmental subject matter and form no part of the claimed design. In FIG. 5, the dash-dot-dash broken lines immediately adjacent to the outer rim edge indicates the boundary of the claim while the evenly spaced broken lines in the center represents unclaimed environmental subject matter and forms no part of the claimed design.