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]
(..) would you like first? The swab or the ink analysis? I'll let Dr. Wells decide. The ink analysis. Okay, so I ran a thin layer chromatography on the actual plus sign. And then, to confirm the results, I actually processed it through imaging electro-spray (..)2016 TvShow: Bones Title: The Fight in the Fixer Season: 11 Episode 15