The Collaborative International Dictionary of English v.0.48:

Bangladesh \Bangladesh\ prop. n.
   An independent Asian country on teh Bay of Bengal that was
   once part of India and then part of Pakistan (called East
   Pakistan).

   Syn: Bangla Desh, East Pakistan.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Bangladesh
    n 1: a Muslim republic in southern Asia bordered by India to the
         north and west and east and the Bay of Bengal to the south;
         formerly part of India and then part of Pakistan; it
         achieved independence in 1971 [syn: Bangladesh, People's
         Republic of Bangladesh, Bangla Desh, East Pakistan]