Definitions
1.verbTo drain, suck or absorb from (tree, etc.).
2.verbTo exhaust the vitality of.
3.verbTo strike with a sap (with a blackjack).
4.verbTo subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of.
5.verbTo pierce with saps.
6.verbTo make unstable or infirm; to unsettle; to weaken.
7.verbTo gradually weaken."he saps my energy"
8.verbTo proceed by mining, or by secretly undermining; to execute saps.