Hypertext Webster Gateway: "Natch"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Natch \Natch\, n. [OF. nache fesse, LL. natica, from L. natis
the rump, buttocks. Cf. {Aitchbone}.]
The rump of beef; esp., the lower and back part of the rump.
{Natch bone}, the edgebone, or aitchbone, in beef.
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