Webster’s Revised Unabridged Dictionary · 1913
Archipelago
Ar′chi·pel′a·go, n.; pl. -goes or -gos. [It. arcipelago, properly, chief sea; Gr. pref ἀρχι- + πέλαγος sea, perh. akin to πληγή blow, and expressing the beating of the waves. See Plague.]
1. The Grecian Archipelago, or Ægean Sea, separating Greece from Asia Minor. It is studded with a vast number of small islands.
2. Hence: Any sea or broad sheet of water interspersed with many islands or with a group of islands.