\Fin"ing\, n.
1. The act of imposing a fin?.

2. The process of fining or refining; clarification; also
   (Metal.), the conversion of cast iron into suitable for
   puddling, in a hearth or charcoal fire.

3. That which is used to refine; especially, a preparation of
   isinglass, gelatin, etc., for clarifying beer.

{Fining pot}, a vessel in which metals are refined. --Prov.
   xvii. 3.