Ethereal oil of wine

(Chem.) a heavy, yellow, oily liquid consisting essentially of etherin, etherol, and ethyl sulphate. It is the oily residuum left after etherification. Called also heavy oil of wine (distinguished from oil of wine, or œnanthic ether).
(Chem.) See under Ethereal.

See also: Ethereal, Oil

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.