tin·ny 
(tĭnē)
(tĭnē)adj. tin·ni·er, tin·ni·est
1. Of, containing, or yielding tin.
2. Tasting or smelling of tin: tinny canned food.
3. Having a thin metallic sound: a high tinny voice.
4. Weak or thin; flimsy.
tinni·ly adv.
tinni·ness n.