rim

Short definition from Wiktionary

Noun

1. 1
   An edge around something, especially when circular.
2. 2
   A wheelrim.
3. 3
   A semicircular copydesk.
4. 4
   A membrane.
5. 5
   The membrane enclosing the intestines; the peritoneum, hence loosely, the intestines; the lower part of the abdomen; belly.
6. 6
   A step of a ladder; a rung.

Verb

1. 1
   To form a rim on.
2. 2
   To follow the contours, possibly creating a circuit.
3. 3
   To roll around a rim.
4. 4
   To coat the rim of a glass with salt or another powder.
5. 5
   To lick the anus of a partner as a sexual act; to perform anilingus.