Longman Dictionary of Contemporary English homepage

Caterpillar

 noun
     
Caterpillar
Related topics: Motor Vehicles
Caterpillar [countable] trademark
also Caterpillar trackTTC a metal belt made of short connected pieces that is fastened over the wheels of a heavy vehicle to help it to move over soft ground:
a Caterpillar tractor (=a vehicle fitted with this belt)
Definition from the Longman Dictionary of Contemporary English
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