abutment

The point of junction between two things, in particular a support, that abutabuts.
(engineering) The solid portion of a structure that supports the lateral pressure of an arch or vault.
(engineering) A construction that supports the ends of a bridge; a structure that anchors the cables on a suspension bridge.
(meteorology) The part of a valley or canyon wall against which a dam is constructed.
Something that abuts, or on which something abuts.
The state of abutting.
(architecture) That element that shares a common boundary or surface with its neighbor.
(dentistry) The tooth that supports a denture or bridge.
A fixed point or surface where resistance is obtained.