Webster's Revised Unabridged Dictionary · 1913

Rim

Rim , noun

[As. rima, reoma, edge; compare Welsh rhim, rhimp, a rim, edge, boundary, termination, Armor, rim. Compare Rind.]

1.
The border, edge, or margin of a thing, usually of something circular or curving; as, the rim of a kettle or basin.
2.
The lower part of the abdomen. [Obsolete] — Shakespeare
Collocations (3)
Arch rim (Phonetics) , the line between the gums and the palate.
Rim-fire cartridge (Military) , See under Cartridge.
Rim lock , See under Lock.

Rim , transitive verb

To furnish with a rim; to border.