The Collaborative International Dictionary
Cavo-rilievo
Cavo-rilievo \Ca"vo-ri*lie"vo\, n. [It.] (Sculp.) Hollow relief; sculpture in relief within a sinking made for the purpose, so no part of it projects beyond the plain surface around.
Wiktionary
cavo-rilievo
n. (context art English) sculpture in relief within a sinking made for the purpose, so no part of it projects beyond the surrounding surface