Meaning

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

  "to refine gold"

• To become pure; to be cleared of impure matter.

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

  "a refined style"

• To improve in accuracy, delicacy, or excellence.

• To make nice or subtle.

  "to refine someone's language"