'Begum' definitions:

Definition of 'begum'

From: WordNet
noun
A Muslim woman of high rank in India or Pakistan

Definition of 'Begum'

From: GCIDE
  • Begum \Be"gum\, n. [Per., fr. Turk., perh. properly queen mother, fr. Turk. beg (see Beg, n.) + Ar. umm mother.] In the East Indies, a princess or lady of high rank. --Malcom. [1913 Webster]