The Collaborative International Dictionary of English v.0.48:
Aitchbone \Aitch"bone`\, n. [For nachebone. For loss of n, cf. Adder. See Natch.] The bone of the rump; also, the cut of beef surrounding this bone. [Spelt also edgebone.] [1913 Webster]The Collaborative International Dictionary of English v.0.48:
Edgebone \Edge"bone`\, n. Same as Aitchbone. [1913 Webster]