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]
(..) What can we do? Alfredo, did you know my father? What a question. And how l knew him. Tall, thin, jolly, with a nice moustache like me. Always smiling. A lot like Clark Gable. Now that l'm older and go to fifth grade... (..)1988 Cinema Paradiso