St. Eu?sta?ti?us (yu?ste? ?i ?s, -??s) n. an island in the Netherlands Antilles, in the E West Indies. 1421; 7 sq. mi. (18 sq. km). Also called Statia. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.