| sap | |
| 1. s. The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition. | |
| 2. s. The sapwood, or alburnum, of a tree. | |
| 3. s. Any juice. | |
| 4. s. (figurative) Vitality. | |
| 5. s. (slang) a naive person; a simpleton | |
| 6. v. To drain, suck or absorb from (tree, etc.). | |
| 7. v. (transitive, figurative) To exhaust the vitality of. | |
| 8. s. (US, slang) A short wooden club; a leather-covered hand weapon; a blackjack. | |
| 9. v. (transitive, slang) To strike with a sap (with a blackjack). | |
| 10. s. (military) 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. | |
| 11. v. To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of. | |
| 12. v. (transitive, military) To pierce with saps. | |
| 13. v. To make unstable or infirm; to unsettle; to weaken. | |
| 14. v. To gradually weaken. | |
| to sap one’s conscience | |
| 15. v. (intransitive) To proceed by mining, or by secretly undermining; to execute saps. | |
