Amount needed to fill a cask

• Amount of liquid lost in shipping
• Amount lacking to make a full cask
• Empty portion of a bottle
• Liquid lost from a container
• The amount that a container (as a wine bottle or tank) lacks of being full
• Amount by which a cask falls short of being full
• To capacity, lid off, time for the remaining liquid

Wiktionary Word definitions in Wiktionary
n. 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 3 The topping-up of such a barrel with fresh wine 4 In ...

Wikipedia Word definitions in Wikipedia
Ullage (from the French ouillage ) is a winemaking term that has several meanings but most commonly refers to the headspace of air between wine and the top of the container holding the wine. It can also refer to the process of evaporation that creates the ...