tinny (Adjective) — Of or containing tin.
tinny (Adjective) — Of very poor quality; flimsy.
tinny (Adjective) — Thin and metallic in sound; lacking resonance. ex. "an unpleasant tinny voice"
tinny (Noun) — (informal) a can of beer. ex. "Australian fans face booze limit - just 24 tinnies a day"