Definition of rooi aas in US English:

rooi aas

(also rooi as)

noun

South African
  • A kind of sea squirt, Pyura stolonifera; = "redbait".

Origin

Late 19th century. From Afrikaans rooiaas from rooi red + aas carrion, bait.

Pronunciation

rooi aas

/ˈrɔɪ ˌɑːs/