1. a blow, esp. with the fist [post-1930s use is mainly Aus.].
|Popular Dict. Aus. Sl. 24: Dong, a blow, esp. with the fist.|
|(con. 1940s) Power of Joy 223: ‘Ten dongs!’ [...] The usual punishment was six dongs but this was a serious case.|
|Teleg. (Brisbane) 5 July 8: Dong, poke (punch) [OED].|
2. a phonecall, a ring.
|Deadmeat 118: I’ll give him a dong on his moby.|