#caterpillar_tread__caterpillartread__caterpillar_tracks  a belt around wheels to grip rough ground
  supertype:  #belt.loop  endless loop of flexible material between two rotating shafts or pulleys
  part of:  #bulldozer  #Caterpillar  #army_tank
  subtype:  #half_track  caterpillar tread goes around only rear wheels

No statement uses or specializes #caterpillar_tread; click here to add one.