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.]
   [1913 Webster]

         Causes and effects which I thus raff up together.
                                                  --Carew.
   [1913 Webster]