What does the word tinfoil mean?

Usage examples for tinfoil

  1. Some told me it was tinfoil; others supposed it to be rivetted with green tiles. – Personal Narrative of a Pilgrimage to Al-Madinah and Meccah by Sir Richard Francis Burton
  2. We then cut the tinfoil and wrapped it nicely around the soap and put it into the tin box. – Twenty Years of Hus'ling by J. P. Johnston