erode-v; 2 Senses

Sense Number 1: wear away gradually by action of wind, water, or chemicals

Examples:
Wind and rain have eroded the statues into shapeless lumps of stone.
The cliffs are eroding several feet a year.
The workers placed a piece of granite above the pipe after the metal eroded.

Mappings:
VerbNet: NM
FrameNet: NP
PropBank: erode.01
WordNet 3.0 Sense Numbers: 2

Sense Number 2: diminish or destroy gradually over time

Examples:
Long enduring peace often erodes popular resolution. (C.L. Sulzberger)
Higher inflation will erode our savings.
As confidence eroded, nervous depositors withdrew their funds from weak institutions.

Mappings:
VerbNet: entity_specific_cos-45.5
FrameNet: NP
PropBank: erode.01
WordNet 3.0 Sense Numbers: 1