[ 'bʌtrɪs ]
■ noun
1》 a projecting support of stone or brick built against a wall.
2》 a projecting portion of a hill or mountain.
■ verb support with ~es.
↘support or strengthen: authority was ~ed by religious belief.
Origin
ME: from OFr. (ars) bouterez 'thrusting (arch)', from boter (see butt 1 ).