Webster's Revised Unabridged Dictionary · 1913

Butment

Butment ({not transcribed}) , noun

[Abbreviation of Abutment.]

1.
(Architecture) A buttress of an arch; the supporter, or that part which joins it to the upright pier.
2.
(Masonry) The mass of stone or solid work at the end of a bridge, by which the extreme arches are sustained, or by which the end of a bridge without arches is supported.
Collocations (1)
Butment cheek (Carpentry) , the part of a mortised timber surrounding the mortise, and against which the shoulders of the tenon bear. — Knight