- The definition of a lintel is a horizontal beam over an opening in a building that carries the weight of the wall above it.
An example of a lintel is a piece of wood that goes across the top of two windows.
A decorative lintel.
lintel definition by Webster's New World
Origin: Old French ; from Vulgar Latin an unverified form limitellus, for limitaris, altered (by associated, association with Classical Latin limes, genitive limitis, border, frontier ; from Classical Latin liminaris, of a threshold or lintel ; from limen: see limen
lintel definition by American Heritage Dictionary
Origin: Middle English, from Old French, probably alteration of lintier, from Vulgar Latin *līmitāris, of a threshold (meaning influenced by Latin līmen, threshold), from Latin, on a border, from līmes, līmit-, boundary.