The Collaborative International Dictionary of English v.0.48:

Malay Archipelago \Malay Archipelago\ prop. n.
   A group of islands in the Indian and Pacific Oceans between
   Asia and Australia.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

Malay Archipelago
    n 1: a group of islands in the Indian and Pacific Oceans between
         Asia and Australia [syn: Malay Archipelago, East
         Indies, East India]