A projecting mass of masonry, used for resisting the thrust of an arch, or for ornament and symmetry.
- A structure, usually brick or stone, built against a wall for support or reinforcement.
- Something resembling a buttress, as:
- The flared base of certain tree trunks.
- A horny growth on the heel of a horse's hoof.
- Something that serves to support, prop, or reinforce: "The law is by its very nature a buttress of the status quo” ( J. William Fulbright).
- To support or reinforce with a buttress.
- To sustain, prop, or bolster: "The author buttresses her analysis with lengthy dissections of several of Moore's poems” ( Warren Woessner).