The Collaborative International Dictionary of English v.0.48:

Rim \Rim\, v. t. [imp. & p. p. Rimmed; p. pr. & vb. n.
   Rimming.]
   To furnish with a rim; to border.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Rim \Rim\, n. [As. rima, reoma, edge; cf. W. rhim, rhimp, a rim,
   edge, boundary, termination, Armor, rim. Cf. Rind.]
   1. The border, edge, or margin of a thing, usually of
      something circular or curving; as, the rim of a kettle or
      basin.
      [1913 Webster]

   2. The lower part of the abdomen. [Obs.] --Shak.
      [1913 Webster]

   Arch rim (Phonetics), the line between the gums and the
      palate.

   Rim-fire cartridge. (Mil.) See under Cartridge.

   Rim lock. See under Lock.
      [1913 Webster]

WordNet (r) 3.0 (2006):

rim
    n 1: the shape of a raised edge of a more or less circular
         object
    2: (basketball) the hoop from which the net is suspended; "the
       ball hit the rim and bounced off"
    3: the outer part of a wheel to which the tire is attached
    4: a projection used for strength or for attaching to another
       object [syn: flange, rim]
    5: the top edge of a vessel or other container [syn: brim,
       rim, lip]
    v 1: run around the rim of; "Sugar rimmed the dessert plate"
    2: furnish with a rim; "rim a hat"
    3: roll around the rim of; "the ball rimmed the basket"