Definitions
1.nounA shining material used for ornamental purposes; especially, a very thin, gauzelike cloth with much gold or silver woven into it; also, very thin metal overlaid with a thin coating of gold or silver, brass foil, or the like.
2.nounVery thin strips of a glittering, metallic material used as a decoration, and traditionally draped at Christmas time over streamers, paper chains and the branches of Christmas trees.
3.nounAnything shining and gaudy; something superficially shining and showy, or having a false luster, and more pretty than valuable.
4.verbTo adorn with tinsel; to deck out with cheap but showy ornaments; to make gaudy.
5.verbTo give a false sparkle to (something).
6.adjectiveGlittering, later especially superficially so; gaudy, showy.