Double-sunk

Double-sunk

Recessed or lowered in two steps, as when a panel is sunk below the surface of a larger panel.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

double-sunk

Recessed or lowered in two steps, as when a panel is sunk below the surface of a larger panel.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.