Buttress/ˈbʌtrəs/ Definition 1 of 3Pro Tip 1/3Architectural Term Used in construction and architecture to describe physical supports for structures. Architects often design modern buildings with hidden buttresses. Pro Tip 2/3Historical Use Common in Gothic architecture, it adds beauty and strength to buildings. The old church was adorned with intricate buttresses. Pro Tip 3/3Metaphorical Use Sometimes used metaphorically to indicate support in a non-physical sense. His friends served as emotional buttresses during tough times.