Did 'Crap' Originate with Thomas Crapper?

CRAP

Noun & adjective. Late Middle English.

[Corresponding to Dutch krappe relating to krappen pluck off, cut off. Compare with Old French crappe siftings, Anglo-Saxon crappa chaff.]

A1 noun. obsolete. The husk of grain; chaff. LME-L15

A2 noun. Any of various plants, especially buckwheat or a weed growing among corn,

as darnel, charlock, etc. dialectical. LME

A3(a) noun. singular & (usually) in plural. The residue formed in boiling, melting, or rendering fat;

crackling. dialectical. L15

A3(b) noun. The dregs of beer etc. dialectical. M19

A4 noun. obsolete. A scrap. Only in 16

A5 noun. Money. slang or dialectical. L17

A6 noun. Faeces; an act of defecation.

Also rubbish, nonsense; something worthless, inferior, or offensive. coarse slang. L19

B attributive or as adj. Worthless, rubbish, useless. slang. M20

Mr Thomas Crapper: Plumber Extraordinaire
(1836-1910)

The word crap, proscribed in my youth but increasingly common among the feckless masses today, is a word clogged with the baggage of folk etymology, nearly all of which is, unsurprisingly, crap. Therefore, let us take a moment to siphon off the truth: Thomas Crapper did not invent the flushing toilet, and no, his name is not the origin of the word crap or any of its crappy derivatives. Mr Crapper was, however, a real person and a plumber from Victorian England. As flushing toilets were primarily developed in the 17th century, and Crapper was born in 1836, it's actually an invention that predates him by a century or so.

Another nail in the cistern of this steaming story is the fact that crap, meaning 'waste' of various sorts, has been in use since at least the Middle English period; even its relatively modern meaning of 'faeces' is attested to by the OED of having been recorded in 1846, when Crapper was still a wee nipper and presumably far too young to have given a flying flush about toilets, piping, or the misappropriation of his family name by potty-mouthed teenagers. Perhaps, then, this was all just a simple case of nominative determination - crap was a well-worn word meaning 'waste', and Mr Crapper grew up, not to be a waster, but to valiantly strain out a living in the field of waste. 

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