Noah Webster's Dictionary 1. (n.) Anything which supports, props up or strengthens. 2. (v. t.) To support with a buttress; to prop; to brace firmly. 3. (n.) A projecting mass of masonry, used for resisting the thrust of an arch, or for ornament and symmetry.

Multi-Version Concordance Buttress (1 Occurrence) 2 Chronicles 26:9 Moreover Uzziah built towers in Jerusalem at the corner gate, and at the valley gate, and at the turning of the wall, and fortified them. (See NAS)