To clean, especially to tidy by removing the contents.(verb)
To empty completely; to remove all money or possessions from.(verb)
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Use "clean out" in a sentence
"After a Friday morning spent sipping eighty ounces of a medicinal concoction called Go Lightly, which is designed to clean out your system prior to certain procedures and which does so with a vengeance, I went to Bethesda on Friday afternoon expecting to leave the following day—but my plans had to be changed."
"Doing it on the kitchen floor was great when you first met, but when you are trying to make toast, resynch your BlackBerry, and clean out the week-old cat litter box, its just not going to happen."
"Amma had gotten Seema to let them clean out the adjacent room to make room for Abbu, and Isha and Mateen made a game every night of choosing which room to sleep in."