batten on

: to grow fat

: to feed gluttonously

: to grow prosperous especially at the expense of another

: a piece of lumber used especially for flooring

: a thin narrow strip of lumber used especially to seal or reinforce a joint

: a strip, bar, or support resembling or used similarly to a batten (as in a sail)

: to furnish with battens

: to fasten with or as if with battens

: to make one secure by or as if by battens