tinfoil

English Thesaurus

1. foil made of tin or an alloy of tin and lead (noun.artifact)

hypernym	:	foil,
definition	:	a piece of thin and flexible sheet metal (noun.artifact)

substance holonym	:	atomic number 50, sn, tin,
definition	:	a silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide (noun.substance)