overburden (n.)

  1. the surface soil that must be moved away to get at coal seams and mineral deposits

  2. an excessive burden

    [ Syn: overload ]

    overburden (v.)

  1. burden with too much work or responsibility

  2. load with excessive weight

The dictionary is based on the WordNet Electronic Lexical Database.
WordNet 3.0 Copyright 2011 by Princeton University. All rights reserved.