ALL meanings of sapped
sap
S s - noun sapped Fortification. a deep, narrow trench constructed so as to form an approach to a besieged place or an enemy's position. 1
- verb with object sapped Fortification. to approach (a besieged place or an enemy position) by means of deep, narrow trenches protected by gabions or parapets. to dig such trenches in (ground). 1
- verb with object sapped to undermine; weaken or destroy insidiously. 1
- verb without object sapped Fortification. to dig a sap. 1