Sap, v. t. [imp. & p. p. Sapped p. pr. & vb. n. Sapping.]
 1. To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of.
 Nor safe their dwellings were, for sapped by floods,
 Their houses fell upon their household gods.   --Dryden.
 2. Mil. To pierce with saps.
 3. To make unstable or infirm; to unsettle; to weaken.
    Ring out the grief that saps the mind.   --Tennyson.


 sap
      n 1: a watery solution of sugars, salts, and minerals that
           circulates through the vascular system of a plant
      2: a person who lacks good judgment [syn: fool, saphead, muggins,
          tomfool]
      3: a piece of metal covered by leather with a flexible handle;
         used for hitting people [syn: blackjack, cosh]
      v 1: deplete; "exhaust one's savings"; "We quickly played out our
           strength" [syn: run down, exhaust, play out, tire]
      2: excavate the earth beneath
      [also: sapping, sapped]


 sapped
      See sap