1. Formerly, Welfare Island, Blackwells Island. an island in the East River, New York City: residential community. 1½ mi. (2½ km) long.
2. an island in Antarctica, in the W part of the Ross Ice Shelf: discovered 1934. ab. 90 mi. (145 km) long.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.