The Collaborative International Dictionary of English v.0.48:

Raff \Raff\ (r[.a]f), v. t. [imp. & p. p. Raffed (r[.a]ft); p.
   pr. & vb. n. Raffing.] [OF. raffer, of German origin; cf.
   G. raffen; akin to E. rap to snatch. See Rap, and cf.
   Riffraff, Rip to tear.]
   To sweep, snatch, draw, or huddle together; to take by a
   promiscuous sweep. [Obs.]
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         Causes and effects which I thus raff up together.
                                                  --Carew.
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The Collaborative International Dictionary of English v.0.48:

Raff \Raff\, n.
   1. A promiscuous heap; a jumble; a large quantity; lumber;
      refuse. "A raff of errors." --Barrow.
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   2. The sweepings of society; the rabble; the mob; -- chiefly
      used in the compound or duplicate, riffraff.
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   3. A low fellow; a churl.
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   Raff merchant, a dealer in lumber and odd refuse. [Prov.
      Eng.]
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