What does "derelict" mean?

Derelict: Lost; adrift; hence, wanting; careless; neglectful; unfaithful. They easily prevailed, so as to seize upon the vacant, unoccupied, and derelict minds of his [Chatham's] friends; and instantly they turned the vessel wholly out of the course of his policy. Burke. A government which is either unable or unwilling to redress such wrongs is derelict to its highest duties. J. Buchanan.

Additional senses

  1. 2.(a) A thing voluntary abandoned or willfully cast away by its proper owner, especially a ship abandoned at sea. (b) A tract of land left dry by the sea, and fit for cultivation or use.

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