Tins meaning : A malleable, ductile, metallic element, resistant to corrosion, with atomic number 50 and symbol Sn. An airtight container, made of tin or another metal, used to preserve food. A metal pan used for baking, roasting, etc. The bottom part of the front wall, which is "out" if a player strikes it with the ball. Money Computer hardware. To place into a tin in order to preserve. To cover with tin. To coat with solder in preparation for soldering.