Other crossword clues for answer "CSO"CSORiccardo Muti's grp.Its conductor is Riccardo Muti: Abbr.Officer heading a staff: Abbr.High-ranking Army man: Abbr.Initials of a staff member.Military man: Abbr.Staff officer: Abbr.Army officer: Abbr.Army man: Abbr.Army V.I.P.Sir Georg Solti's gp.U.S.N. rank