1. tinning - Noun
2. tinning - Verb
Derived from tin
of Tin
The act, art, or process of covering or coating anything with melted tin, or with tin foil, as kitchen utensils, locks, and the like.
The covering or lining of tin thus put on.
Source: Webster's dictionarycareful tinning of the ends of wires results in a better joint when you solder them Source: Internet