The Collaborative International Dictionary
Lametta
Lametta \La*met"ta\, n. [Cf. It. lametta, dim. of lama a thin
plate.]
Foil or wire made of gold, silver, or brass.
--De Colange.
Wiktionary
lametta
n. Thin wire or foil made of brass, gold or silver; now especially thin strips of metallic foil used as Christmas decoration.