1. (dated) A water closet containing a flushable toilet, especially a toilet fixture identified "T. Crapper", a well known Victorian -era English engineer and plumbing installer, Thomas Crapper.

2. Crapper (Noun) A water closet containing a flushable toilet, especially a toilet fixture identified "T. Crapper", a well known Victorian-era English engineer and plumbing installer, Thomas Crapper.

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