The student refined her style of writing.
He refined the design for the building.
Rather than wade through all of the results, you could refine your search by adding additional keywords.
The scientists refined their methods of analysis.
Refine the constant in the equation.
WordNet 3.0 Sense Numbers: 1, 2, 6
Refine the sugar.
It is advisable to refine a diamond for use medicinally.
We refine many nutrients out of the foods in our modern diet.
The company refines paper stock.
Energy companies refine oil.
WordNet 3.0 Sense Numbers: 3, 4, 5