abutment

The point of junction between two things, in particular a support, that abuts.

The solid portion of a structure that supports the lateral pressure of an arch or vault.

A construction that supports the ends of a bridge; a structure that anchors the cables on a suspension bridge.

Each of the bridges consists of six separate girder spans on brick abutments.

The part of a valley or canyon wall against which a dam is constructed.

Heavy rains have caused the dam's abutments to seep, raising concern over possible dam failure.

Something that abuts, or on which something abuts.