From Longman Dictionary of Contemporary EnglishPlasticinePlas‧ti‧cine /ˈplæstəsiːn/ noun [uncountable] trademark British EnglishDHT a soft substance like clay, that comes in many different colours and is used by children for making models → play dough
Examples from the Corpus
Plasticine• Plasticine Plasticine is an old favourite and together with dough provides a useful alternative to clay.• You can also use large flat discs of Plasticine to mould the compartments.• They were executed in low relief in pink Plasticine.• The trees and shrubs wavering in the wind had stilled and now resembled a child's Plasticine world.• One's thighs - as a cursory prod confirmed - appeared to be modelled from sun-softened Plasticine. 