Collins COBUILD Advanced Learner's English Dictionary - fine-tune

(fine-tunes, fine-tuning, fine-tuned) If you fine-tune something, you make very small and precise changes to it in order to make it as successful or effective as it possibly can be. We do not try to fine-tune the economy on the basis of short-term predictions... VERB: V n • fine-tuning There’s a lot of fine-tuning to be done yet. N-UNCOUNT