A horizontal structural member that spans an opening in a masonry wall, such as a window or door. Lintels can be made of various materials, including reinforced concrete, steel, or masonry units. They transfer the load of the wall above the opening to the adjacent masonry, allowing for the creation of openings without compromising structural integrity.
http://www.wikidata.org/entity/Q1370517, https://en.wikipedia.org/wiki/Lintel, https://www.google.com/search?kgmid=/m/02rzg1p&hl=en