refine [refined, refining, refines](to reduce to a fine, unmixed, or pure state; to free from impurities; to free from dross or alloy) verb [UK: rɪ.ˈfaɪn] [US: rə.ˈfaɪn]
paraffinareverb
paraffin(treat with paraffin) verb [UK: ˈpæ.rə.fɪn] [US: ˈpe.rə.fən]