Green’s Dictionary of Slang

(S.Afr.) an uncouth or common loutish person.

1970		informant in DSAE (1996).
1990		Frontline Mar.–Apr. 16: The throng is 90% decent people waiting with the patience of the rock of ages, and 10% loud drunken low-grade gomtorrels who swill liquor and use the floor as a dustbin [DSAE].