sap

/ˈsap/

Middle English, from Old English sæp; akin to Old High German saf sap

noun

  1. the fluid part of a plant; specifically : a watery solution that circulates through a plant's vascular system

  2. a body fluid (such as blood) essential to life, health, or vigor

  3. bodily health and vigor

verb

  1. to drain or deprive of sap

  2. to knock out with a sap

verb

  1. to proceed by digging a sap

  2. to subvert by digging or eroding the substratum or foundation : undermine

  3. to gradually diminish the supply or intensity of

weaken enfeeble debilitate undermine sap disable mean to lose or cause to lose strength or vigor. weaken may imply loss of physical strength, health, soundness, or stability or of quality, intensity, or effective power. enfeeble implies a condition of marked weakness and helplessness.