refines

/R IH0 F AY1 N Z/
verb
  1. 1

    To purify; reduce to a fine, unmixed, or pure state; to free from impurities.

    โ€œto refine goldโ€

  2. 2

    To become pure; to be cleared of impure matter.

  3. 3

    To purify of coarseness, vulgarity, inelegance, etc.; to polish.

    โ€œa refined styleโ€

  4. 4

    To improve in accuracy, delicacy, or excellence.

  5. 5

    To make nice or subtle.

    โ€œto refine someone's languageโ€

Source: https://en.wiktionary.org/wiki/refine, https://en.wiktionary.org/wiki/refines