• verb: to make (something or someone) thin or thinner or to become thin or thinner
  • verb: to make thin or 'thinner'
  • adjective: having a small distance between the top and bottom or front and back surfaces
  • adjective: having little extent from one surface to its opposite
  • usually + 'down'
  • synonyms: rare, slim, slender


  • He plans to 'thin' (out) the young carrots in the garden. [=to remove some of them so that there is more room between the remaining carrots]

  • His hair is a little 'thin' on top. = He's a little 'thin' on top. [=he does not have a lot of hair on the top of his head]

  • The bank's decision to raise rates could be 'the thin end of the wedge'. [=many other banks may also decide to raise rates]

Movie clips

Movie quotes

  • (..) then we had a meat or a fish. Paulie did the prep work. He was doing a year for contempt... ... and had a wonderful system for garlic. He used a razor and sliced it so thin... ... it would liquefy in the pan with a little oil. It was a very good system. Vinnie was in charge of the tomato sauce. (..)
    1990 Goodfellas
  • (..) the front of the ship off? You want to send a man into space without the front of his ship? Mars' atmosphere is so thin, you don't need a lot of streamlining. By the time the ship's going fast enough (..)
    2015 The Martian
  • (..) Drop your socks and grab your crocs, we're about to get wet on this ride. Wait, wait! He's gone! Sorry buddy, had to thin out the herd. What's your twenty? - What are you doing? - I'm rebooting Rhodey's suit. Tony! Reboot complete. (..)
    2010 Iron Man 2