Noun
An opening or drain leading into a plumbing system to provide a location to insert a snake or other implement for cleaning.
An enema
Source: en.wiktionary.orgSuch as: Organizing, spring cleaning, clean outs, after party cleanup, deep home cleaning, garage cleanout, and more. Source: Internet
The cleanout should be a few inches to a foot off the ground so the dog can easily access the readily available food. Source: Internet