'Natch bone' definitions:

Definition of 'Natch bone'

From: GCIDE
  • Natch \Natch\ (n[a^]ch), 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. [1913 Webster]
  • Natch bone, the edgebone, or aitchbone, in beef. [1913 Webster]