Artificial intelligent assistant

put-bone

put-bone
  ? The knuckle-bone or astragalus.

1664 E. Browne in Sir T. Browne's Wks. (1836) I. 45 Mr. Osborne sent my father a calf, whereof I observed the knee joynt, and the neat articulation of the put bone, which was here very perfect. I dissected another bull's heart. Ibid. 48 In a putbone the unfortunate casts are outward, the fortunate inward.

Oxford English Dictionary

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