- State of abutting. - That on or against which a body abuts or presses - The solid part of a pier or wall, etc., which receives
the thrust or lateral pressure of an arch, vault, or strut. - 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. - In breech-loading firearms, the block behind the barrel
which receives the pressure due to recoil.
Definition
[ n.]