The term 'light metallic sound' can be described by three crossword solutions: PLINK (5 letters), TING (4 letters), and TINK (4 letters). PLINK is a light, sharp sound, usually made by metal objects striking each other. TING is a light, ringing sound, often made by metal objects striking each other. TINK is a light, tinkling sound, usually made by metal objects striking each other. All three words describe a light, metallic sound, which is often heard when metal objects are struck together.