1. [noun] (uncountable) The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition.
2. [noun] (uncountable) The sap-wood, or alburnum, of a tree.
3. [noun] (slang) (countable) A simpleton; a saphead; a milksop; a naive person.
4. [noun] (countable) (US) (slang) A short wooden club; a leather-covered hand weapon; a blackjack.
5. [verb] (transitive) (slang) To strike with a sap (with a blackjack).
6. [noun] (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.
7. [verb] (transitive) To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of.
8. [verb] (transitive) (military) To pierce with saps.
9. [verb] To make unstable or infirm; to unsettle; to weaken.
10. [verb] (transitive) To gradually weaken.
11. [verb] (intransitive) To proceed by mining, or by secretly undermining; to execute saps ? 12
12. [noun] A watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant.
13. [noun] A person who lacks good judgment.
14. [noun] A piece of metal covered by leather with a flexible handle; used for hitting people.
15. [verb] Deplete; 'exhaust one's savings'; 'We quickly played out our strength'.
16. [verb] Excavate the earth beneath.
