entocuneiform

from The Century Dictionary.

• noun In anatomy, the innermost one of the three cuneiform bones of the distal row of tarsal bones; the inner cuneiform bono; the entosphenoid of the foot, in relation with the inner digit. See cut under foot.

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

• noun (Anat.) One of the bones of the tarsus. See cuneiform.