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base-court, basse-cour

1. A yard or ward behind the outer bailey of a castle.
2. On a farm, a service yard often reserved for fowl.
3. A lesser or service courtyard in any building.
4. (Brit.) A lower court of law.

bas-relief, basso-relievo, basso-rilievo

A carving, embossing, or casting moderately protruded from the background plane; low relief.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.