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noun Abutment n. 2.That on or against which a body abuts or presses; as (a)(Arch.) The solid part of a pier or wall, etc., which receives the thrust or lateral pressure of an arch, vault, or strut. (b)(Mech.) A fixed point or surface from which resistance or reaction is obtained, as the cylinder head of a steam engine, the fulcrum of a lever, etc. (c)In breech-loading firearms, the block behind the barrel which receives the pressure due to recoil.
Collaborative International Dictionary of English 0.48
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