Dictionary.net

• bov'ril, n. a registered trade-mark applied to a special meat extract. [Coined from Gr. bous, bovis, an ox, and vril, the electric fluid represented as the one common origin of the forces in matter, in Lytton's novel The Coming Race, 1871.]

1908 - Chambers's Twentieth Century Dictionary of the English Language
By Thomas Davidson

• A meat extract used like beef tea.

1919 - The concise Oxford dictionary of current English
By Sir Augustus Henry