Definition of tinfoil in US English:


(also tin foil)


  • Foil made of aluminum or a similar silvery-gray metal, used especially for covering or wrapping food.

    ‘garlic bread wrapped in tinfoil’
    • ‘In our school we have a green school programme where we recycle a variety of things like tinfoil, cling-film, batteries and loads more.’
    • ‘Store in an airtight container, or wrapped in tinfoil in the fridge.’
    • ‘It's the sonic equivalent of chewing on tinfoil.’
    • ‘Slice tomatoes (big chunks work best) and set them also on tinfoil.’
    • ‘To protect what we have uncovered, we first cover the bones with tinfoil, then with strips of burlap dipped in plaster.’
    • ‘A leaf skittering on the sidewalk sounded like tinfoil.’
    • ‘Chill the whole cake for 24 hours or - if you intend to freeze it - cover tightly with tinfoil, then plastic wrap and freeze at this stage.’
    • ‘In our recipe this week, we sear the roast to keep the flavour in, then cook it in tinfoil on the side of the barbecue where the flame has been turned off.’
    • ‘Under the brown wrapping paper was two layers of tinfoil covering a wooden box.’
    • ‘You get equipped with a decoder ring, walkie talkie watch, secret handshake and some tinfoil to wear on your head.’
    • ‘My fists clenched, taking the metal bench with them, smashing the metal together like a piece of tinfoil.’
    • ‘Cover with tinfoil and braise in the oven until tender.’
    • ‘Served in a double-lined package of greaseproof paper and tinfoil, it had the look of a Christmas present for a cat.’
    • ‘We had a few decorations lying around, and Jane, Derek, and I had fun making decorations out of cardboard and tinfoil.’
    • ‘Her food seems innocent enough at first - a glass Pyrex dish covered in tinfoil.’
    • ‘The bodies and instruments were formed out of paper, tinfoil, foil-backed paper and dowel rods.’
    • ‘They had draped the railings in Union Flags and pictures of the Queen Mother, and themselves in fleeces, sleeping bags and even lengths of tinfoil to keep out the cold.’
    • ‘They say never use tinfoil for these kind of things.’
    • ‘It arrived quite literally in a blaze of glory, wrapped in tinfoil with flames spurting out of the top, looking for all the world like my mum's finest Christmas pudding.’
    • ‘An environmentally aware school which has completely banned clingfilm, tinfoil and crisps has already cut its daily waste by more than half.’