E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Hart of Grease (A).
A hunters phrase for a fat venison; a stag full of the pasture, called by Jaques a fat and greasy citizen. (As You Like It, i. 1.) (See HEART OF GRACE.)
1
It is a hart of grease, too, in full season, with three inches of fat on the brisket.Sir W. Scott: The Monastery, chap. xvii.