The Collaborative International Dictionary of English v.0.48:

Jubbah \Jub"bah\, n. Also Jubbeh \Jub"beh\, Joobbeh \Joob"beh\
   [Hind. jubba, fr. Ar. jubbah.]
   A long outer garment worn by both sexes of Mohammedans of the
   better class.
   [Webster 1913 Suppl.]