1. To overturn from the foundation; to overthrow; to ruin utterly.
2. To pervert, as the mind, and turn it from the truth; to corrupt; to confound.
3. Overthrow; pervert.

1. To excavate the earth beneath, or the part of, especially for the purpose of causing to fall or be overthrown; to form a mine under; to sap
2. (Figurative) To remove the foundation or support of by clandestine means; to ruin in an underhand way