adj. & n.
adj. (tinnier, tinniest) 1 of or like tin. 2 (of a metal object) flimsy, insubstantial. 3 a sounding like struck tin. b (of reproduced sound) thin and metallic, lacking low frequencies. 4 Austral. sl. lucky.
n. (also tinnie) (pl. -ies) Austral. sl. a can of beer. tinnily adv. tinniness n.