The Collaborative International Dictionary of English v.0.48:

Rush \Rush\, n.
   1. A moving forward with rapidity and force or eagerness; a
      violent motion or course; as, a rush of troops; a rush of
      winds; a rush of water.
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            A gentleman of his train spurred up his horse, and,
            with a violent rush, severed him from the duke.
                                                  --Sir H.
                                                  Wotton.
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   2. Great activity with pressure; as, a rush of business.
      [Colloq.]
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   3. A perfect recitation. [College Cant, U.S.]
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   4. (Football)
      (a) A rusher; as, the center rush, whose place is in the
          center of the rush line; the end rush.
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   Bunt rush (Football), a combined rush by main strength.

   Rush line (Football), the line composed of rushers.
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