arcboutant, arch buttant (ant = an)

[Fr. arc - boutant, arc- bouter = to buttre : arc = a bow, an arch; bout = end, extremity.] Arch.: An abutment. "An arch formed prop which connects the walls of the upper and central portions of an aisled structure with the vertical buttre es of the outer walls." (Glo ary of Architecture.) It is called also a flying buttre , because it pa es through the air over the roof of the side aisles. FLYING BUTTRESSES.