Sap (?), v. i. To proceed by mining, or by secretly undermining; to execute saps. W. P. Craighill.
Both assaults are carried on by sapping. Tatler.
Webster's Dictionary 1913
Sap (?), v. i. To proceed by mining, or by secretly undermining; to execute saps. W. P. Craighill.
Both assaults are carried on by sapping. Tatler.