咚咚 Traditional form: 咚咚 Pinyin (reading): dōngdōng Definitions: (onom.) thud thumping thudding pounding Characters: 咚 - onomatopoetic, a thumping sound 咚 - onomatopoetic, a thumping sound Traditional characters: 咚 - onomatopoetic, a thumping sound 咚 - onomatopoetic, a thumping sound