From Longman Dictionary of Contemporary Englishbas-reliefbas-re‧lief /ˌbɑː rɪˈliːf, ˌbæs-/ noun [countable, uncountable] technical AVSa style of art in which stone or wood is cut so that shapes are raised above the surrounding surface → high relief
Examples from the Corpus
bas-relief• A monument to a railway engineer in Bromsgrove shows a train in bas-relief.• The bas-reliefs show scenes from the history of Milan.• Jaq often prayed to this bas-relief.Origin bas-relief (1600-1700) French bas “low” + relief “raised work” 