ullage

Etymology
From, from , from , from , from. See.

Noun

 * 1) In a wine bottle, the empty space between the cork and the top of the wine.
 * 2) In a cask or barrel, the empty space, occupied by air, that is created by not completely filling the cask or barrel, or through spillage.
 * 3) The topping-up of such a barrel with fresh wine.
 * 4) In an industrial setting, the empty space in a tank, especially as for fuel.
 * 5) Additional cargo of little or no value taken on to prevent movement of shifting of the purposive cargo.
 * 6) * 1815 Niles Weekly Register volume 8, Supplement, p. 152. From an inventory of the frigate Confiance:
 * [&hellip;]5 hhds. rum/ 5 bbls. flour/ 1 bbl. sugar/ 9 do. pork/ 1 do. suett/ 3 do. cocoa/ 6 do. peas/ 2 ullage bbls. vinegar[&hellip;]
 * 1)  Left-over wine surreptiously drunk by waiters as they clear away the glasses.
 * 1) Additional cargo of little or no value taken on to prevent movement of shifting of the purposive cargo.
 * 2) * 1815 Niles Weekly Register volume 8, Supplement, p. 152. From an inventory of the frigate Confiance:
 * [&hellip;]5 hhds. rum/ 5 bbls. flour/ 1 bbl. sugar/ 9 do. pork/ 1 do. suett/ 3 do. cocoa/ 6 do. peas/ 2 ullage bbls. vinegar[&hellip;]
 * 1)  Left-over wine surreptiously drunk by waiters as they clear away the glasses.

Verb

 * 1) To gauge the amount of empty space between the top of a cask and the level of liquid inside it.