rraup means an alarm call used by vervets to warn of the presence of an eagle. Lexicurio rates it Sui generis — a strength score of 91 out of 100.
noun
- An alarm call used by vervets to warn of the presence of an eagle.“Vervet monkeys have several different sorts of call, including "leopard alarm barks," "eagle rraups," and "snake chutters" (Struhsaker, 1967).”