I'm writing a thank you letter for a professor whose lab I am working in and I play a fairly small role. Although I have a very tiny part, for me the lab is a huge part of my life.

Is there an English saying that describes a small part of the whole? Like a tiny screw in the machine or a walk-on in a play? I was going to go something like "a small keg in the brewery" but I don't know if that makes much sense.

Thanks so much!


You might use "a small cog in a big wheel" but I'm not sure that's exactly what you're aiming for.

  • Or "a small fish in a big pond". – WS2 Feb 11 at 21:45

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.