GNU Collaborative International Dictionary of English

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  1.       
    
    Onslaught , n. [OE. on on + slaught, slaht, slaughter. See Slaughter.]
    1. An attack; an onset; esp., a furious or murderous attack or assault.
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      By storm and onslaught to proceed.
      Hudibras.

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    2. A bloody fray or battle. [Scot.]
      Jamieson.

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