caterpillar tread

Noun
  1. An endless metal belt on which tracked vehicles move over the ground (synset 104471653)
    is a type of: belt - endless loop of flexible material between two rotating shafts or pulleys
    subtypes: half track - a track that goes around only rear wheels
    is a part of: tracked vehicle - a self-propelled vehicle that moves on tracks
    same as: caterpillar track, track

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