baron of beef: Meaning and Definition of

bar'on of beef'

Pronunciation: [key]
— Chiefly Brit. Chiefly Brit.
  1. a joint of beef consisting of the two sirloins joined at the backbone; double sirloin. Cf. baron (def. 4).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.