flying buttress
US /ˈflaɪ.ɪŋ ˈbʌt.rəs/
UK /ˈflaɪ.ɪŋ ˈbʌt.rəs/

1.
аркбутан
a specific form of buttress composed of an arch that extends from the upper part of a wall to a pier, supporting the wall by transferring the outward thrust of the vault to the pier
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The cathedral's impressive flying buttresses allowed for taller walls and larger windows.
Впечатляющие аркбутаны собора позволили сделать стены выше и окна больше.
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Gothic architecture is characterized by the use of flying buttresses.
Готическая архитектура характеризуется использованием аркбутанов.