cleanout

About 0.04 uses per million words.

Meaning

1. noun An opening or drain leading into a plumbing system to provide a location to insert a snake or other implement for cleaning.
2. noun A thorough cleaning that removes everything removable.

   attic, basement, and garage cleanouts [in advertisements]

3. noun An enema.

Similar words

drain draining rooter weephole closet auger sewer cesspipe draintrap well drain sink

Often followed by

plug door is of and doors plugs at openings