TINNY is validvalid

of or resembling tin [adj TINNIER, TINNIEST] : TINNILY [adv], TINNINESS [n]

13,772 of 196,601 in NWL2023·also valid in CSW24

making a noise like tin [adj TINNIER, TINNIEST, TINNILY] / a mug made of tinplate; a can of beer, also TINNIE [n TINNIES]