rim

Noun

(countable) A rim is the outer edge of something, especially if the thing is circular.
It was hard to get the new tire over the rim of the wheel.

Plain form
rim

Third-person singular
rims

Past tense
rimmed

Past participle
rimmed

Present participle
rimming

(transitive) If you rim something, you form a rim around it.
(transitive) (vulgar) (slang) If you rim a person, you lick the anus of your partner as a sexual act.