What does Rui stand for?

Ruidoso Downs, NM - North American horse racing tracks (HRTC)

Reality User Interface (SAUS)

Remote User Interface

Research in Undergraduate Institutions - A National Science Foundation program

Royal University of Ireland

Rufiji - Language code (ETLW)

Ruidoso - New Mexico - Airport symbol (OAG)

Ruidoso, NM - Location identifier - FAA (FAAL)