unbone

from The Century Dictionary.

• To deprive of a bone or of bones. To fling or twist about as if boneless.

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

• transitive verb To deprive of bones, as meat; to bone.
• transitive verb rare To twist about, as if boneless.

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

• verb To deprive of bones, as meat; to bone.
• verb obsolete To twist about, as if boneless.