ONSLAUGHT

onslaught. Onslaught, n. a fierce attack, onset, storm, ob.

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On″slaught′ (?), n. [[OE. on on + slaught, slaht, slaughter. See Slaughter.]] 1. 1. An attack; an onset; esp., a furious or murderous attack or assault.
By storm and onslaught to proceed. Hudibras. 2. 2. A bloody fray or battle. Jamieson.