· improve or perfect by pruning or polishing; "refine one's style of writing"
Synonym(s): polish, refine, down
Hypernym(s): better, improve, amend, ameliorate, meliorate
· adjust finely; "fine-tune the engine"
Synonym(s): tweak
· make fine adjustments or divide into marked intervals for optimal measuring; "calibrate an instrument"; "graduate a cylinder"
Synonym(s): calibrate, graduate
Hypernym(s): adjust, set, correct