From en.wiktionary.org:
[Crapper]
** English
*** Pronunciation
- [en] - [en] - [en]
*** Etymology 1
From [en],[1] although possibly repopularized by barracks employing 吴语: Thomas Crapper's plumbing fixtures used during the First World War.[2] The occupational surname [en] derives from a dialectal variant of [en]. [en]
**** Noun
[en-noun]
1. [en] A chamber pot or toilet , _particularly_ [en] a flush toilet by 吴语: Thomas Crapper . 2. [en] A lavatory or outhouse . 3. * {{ quote-book |en |year=1994 |month=December |title=Spy |page=10 |pageurl=https://books.google.nl/books?id=VMu80ElF7xEC&pg=PA10&dq=reading+material+crapper |publisher=Sussex Publishers, LLC. |passage=I purchased your magazine for the first and last time. What the hell is it? (..) It wasn't even good reading material for the CRAPPER.}}
***** Synonyms
- [en] ; _see also_ THESAURUS:CHAMBER POT , THESAURUS:TOILET , _and_ THESAURUS:BATHROOM
***** Translations
[coarse slang for a device or place to defecate]<!--kindly ONLY place similar constructions here; other terms belong at chamber pot, toilet, &c.-->
- Finnish: [fi] [lit. shithouse] - French: [fr] , [fr] , [fr] , [fr] , [fr] - Hebrew: [he] - Russian: [ru] [lit. push] , [ru] [lit. push out] [trans-bottom]
[checktrans-top]
- Bulgarian: [bg] [trans-bottom]
**** Adjective
[en]
1. [crap]
*** Etymology 2
[en].
**** Noun
[en-noun]
1. A half-glass of whiskey .
*** Etymology 3
[en], implying that rap music is inferior.
**** Noun
[en-noun]
1. [en] A rapper , or a performer of rap music .
*** References
References: [1]. _Oxford English Dictionary_ . "crapper, _n._ " Oxford University Press (Oxford), 1972. [2]. Adams, Cecil. " Why Do We Call It the "Bathroom", Even When It Has No Tub?" (see http://www.straightdope.com/columns/read/573/why-do-we-call-it-the-bathroom-even-when-it-has-no-tub) _The Straight Dope (see http://www.straightdope.com) _ . 3 March 1985. [en]