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Noun: arc-boutant (arcs-boutants)  'aa(r)k-boo'toÑ
  1. A buttress that stands apart from the main structure and connected to it by an arch
    "The Gothic cathedral's arcs-boutants allowed for larger windows";
    - flying buttress

Derived forms: arcs-boutants

Type of: buttress, buttressing

Encyclopedia: Arc-boutant