rim

Etymology 1

From Middle English rim, rym, rime, from Old English rima (“rim, edge, border, bank, coast”), from Proto-Germanic *rimô, *rembô (“edge, border”), from Proto-Indo-European *rem-, *remə- (“to rest, support, be based”). Cognate with Saterland Frisian Rim (“plank, wooden cross, trellis”), Old Saxon rimi (“edge; border; trim”), Icelandic rimi (“a strip of land”).

noun

1. An edge around something, especially when circular.
   That's...our galaxy. We're beyond the rim. 25 September 2007, Bungie, Halo 3, v1.0, Microsoft Game Studios, [[w:Xbox 360, level/area: The Ark|Xbox 360, level/area: The Ark]]
2. (automotive, cycling) A wheelrim.
   About an hour later, she noticed an all black Phantom with tints and chrome rims riding slowly through the car lot. 2010, Rochelle Magee, No Witnesses: A Perilous Journey, page 36
3. (journalism) A semicircular copydesk.
   A copy chief with poor people skills makes life miserable for copy editors on the rim; […] 2004, John Russial, Strategic Copy Editing, page 130
   On the rim are copy editors who edit stories for accuracy, brevity and clarity. 2009, Gaylon Eugene Murray, Effective Editing, page 7

verb

1. (transitive) To form a rim on.
2. (transitive) To follow the contours, possibly creating a circuit.
   Palm trees rim the beach.
   A walking path rims the island.
3. (transitive or intransitive, of a ball) To roll around a rim.
   The golf ball rimmed the cup.
   The basketball rimmed in and out.

Etymology 2

From Middle English rim, rym, ryme, reme, from Old English rēoma (“membrane, ligament”), from Proto-West Germanic *reumō.

noun

1. (UK dialectal) A membrane.
2. (UK dialectal or obsolete) The membrane enclosing the intestines; the peritoneum, hence loosely, the intestines; the lower part of the abdomen; belly.
   Moy shall not serve; I will have forty moys; / Or I will fetch thy rim out at thy throat / In drops of crimson blood. 1599, Shakespeare, King Henry V, act iV, scene IV - Pistol to a captured French soldier from whom he wants a ransom and whom he does not understand

Etymology 3

From a variation of ream.

verb

1. (vulgar, slang) To lick the anus of a partner as a sexual act; to perform anilingus.
   When she started thrusting her hips back against his finger, he turned her over and rimmed her asshole as he fingered her clit. 2008, Lexy Harper, Bedtime Erotica for Freaks (Like Me), page 216