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Webster's Dictionary (1865)

Bŭt'ment, n.

noun

[Abbreviation of abutment, q. v.]

  1. (Arch.) A buttress of an arch; the supporter, or that part which joins it to the upright pier.
  2. (Masonry.) (a.) The mass of stone or solid work at the end of a bridge, by which the extreme arches are sustained. (b.) The mass of stone at the end of a timber bridge, without arches, by which it is supported. See ABUTMENT.