from
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]