Nouns

(n)sapa watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant
(n)fool, sap, saphead, muggins, tomfoola person who lacks good judgment
(n)blackjack, cosh, sapa piece of metal covered by leather with a flexible handle; used for hitting people

Verbs

(v)run down, exhaust, play out, sap, tiredeplete“exhaust one's savings”, “We quickly played out our strength”
(v)sapexcavate the earth beneath