To fray or wear down, especially at the edges.
To drain emotionally or physically.
A burnt fragment; a cinder or crisp.
The condition or quality of being frazzled; a frayed end.
To dig underneath (something), to make a passage for destructive or military purposes; to sap.
To weaken or work against; to hinder, sabotage.
To erode the base or foundation of something, e.g. by the action of water.