咚 ⇒
咚 dōng, boom (of a drum)
叮咚 dīngdōng, (onom.) ding dong/jingling of bells/clanking sound
咚咚 Dōngdong/dōngdōng, Dongdong, cheerleading mascot of 2008 Beijing Olympics, (onom.) thud/thumping/th...
咕咚 gūdōng, splash/(onom.) for heavy things falling down
黑咕隆咚 hēigulōngdōng, pitch-black/pitch-dark