Brown sauce (meat stock based) definition

Brown sauce (meat stock based)

WordNet

(1) Bouillon or beef stock thickened with butter and flour roux and variously seasoned with herbs or Worcestershire etc.

(2) A sauce based on soy sauce

WiktionaryText

A sauce made by the addition of stock to a heated and browned mixture of butter and flour.
Any of many brands of bottled sauce based on malt vinegar, fruit and spices; see, for example, HP Sauce.