#digit.extremity__dactyl  a finger or toe in human beings or corresponding part in other vertebrates
  supertype:  extremity__appendage__member  an external body part that projects from the body; "it is important to keep the extremities warm"
  subtype:  finger  toe
  part of:  vertebrate
  part:  phalanx  any of the bones (or phalanges) of the fingers or toes
  part:  nail.horny_structure  horny plate covering and protecting part of the dorsal surface of the digits
     part:  lunule__half-moon__lunula  the crescent-shaped area at the base of the human fingernail
     part:  matrix.animal_tissue  the formative tissue at the base of a nail

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