definition of
[overburden]

[1] #1 overburden v. burden with too much work or responsibility. wn

[2] #2 overburden n. the surface soil that must be moved away to get at coal seams and mineral deposits. wn

[3] #3 overburden n. [overload] an excessive burden. wn

[4] #4 overburden v. load with excessive weight. wn