baldrib

from The Century Dictionary.

• noun A joint of pork cut from nearer the rump than the spare-rib, and consisting of a rib from which the fat has been removed.
• noun Hence Figuratively, a lean, lanky person.

from the GNU version of the Collaborative International Dictionary of English.

• noun engraving A piece of pork cut lower down than the sparerib, and destitute of fat.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun UK, dated A piece of pork cut lower down than the sparerib, and destitute of fat.