| Sap: English to English |
| Sap (n.) A narrow ditch or trench made from the foremost parallel toward the glacis or covert way of a besieged place by digging under cover of gabions, etc. |
| Sap (n.) A simpleton; a saphead; a milksop. |
| Sap (n.) The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition. |
| Sap (n.) The sapwood, or alburnum, of a tree. |
| Sap (v. i.) To proceed by mining, or by secretly undermining; to execute saps. |
| Sap (v. t.) To make unstable or infirm; to unsettle; to weaken. |
| Sap (v. t.) To pierce with saps. |
| Sap (v. t.) To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of. |