The Collaborative International Dictionary of English v.0.48:

Felly \Fel"ly\, adv.
   In a fell or cruel manner; fiercely; barbarously; savagely.
   --Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Felly \Fel"ly\, n.; pl. Fellies. [OE. feli, felwe, felow, AS.
   felg, felge; akin to D. velg, G. felge, OHG. felga felly
   (also, a harrow, but prob. a different word), Dan. felge.]
   The exterior wooden rim, or a segment of the rim, of a wheel,
   supported by the spokes. [Written also felloe.]
   [1913 Webster]

         Break all the spokes and fellies from her wheel.
                                                  --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

felly
    n 1: rim (or part of the rim) into which spokes are inserted
         [syn: felloe, felly]