/ Dictionary / Index A aitchbone: Meaning and Definition of Find definitions for: aitch•bone Pronunciation: (āch'bōn"), [key] — n. the rump bone, as of beef. the cut of beef that includes this bone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: aitchbone (Thesaurus) aitch Aitken Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language