From Longman Dictionary of Contemporary Englishplastic explosiveˌplastic exˈplosive noun [countable, uncountable] HCPPMWan explosive substance that can be shaped using your hands, or a small bomb made from this
Examples from the Corpus
plastic explosive• We waited for two minutes before the combined strength of thirty-five pounds of EP-12 plastic explosive tore the car apart.• Inside he found what he took to be plastic explosive, wrapped in cellophane, with a wire protruding from it.• Semtex is not the only plastic explosive. 