Did You Know?
A buttress is an exterior support projecting from a wall that is used to resist the sideways force, also called thrust, created by the load on an arch or roof. Its name was first adopted into English as "butres" in the 14th century. It came to us from the Anglo-French "(arche) boteraz," meaning "thrusting (arch)," and ultimately derives from the verb "buter," "to thrust." "Buter" is also the source of our verb "butt," meaning "to thrust, push, or strike with the head or horns." Relatively soon, "buttress" came to be used figuratively for anything that supports or strengthens something else. In addition, it was also in the 14th century that "buttress" was first used as a verb meaning "to support or strengthen," literally and figuratively.