cameo
noun
°A piece of jewelry, etc., carved in relief.
°A single very brief appearance by a prominent actor or actress (or other notable) in a movie or song.
verb
°To appear in a cameo role.
regimen
noun
°Orderly government; system of order; administration.
°Any regulation or remedy which is intended to produce beneficial effects by gradual operation.
expatiate
verb
°(now rare) To range at large, or without restraint.
°To write or speak at length; to be copious in argument or discussion, to descant.