Liquid amount lost in storage

• Amount by which a cask falls short of being full
• Amount lacking to make a full cask
• Amount of liquid lost in shipping
• Amount needed to make a full cask
• Unfilled part of a wine cask

WordNet Word definitions in WordNet
n. the amount that a container (as a wine bottle or tank) lacks of being full

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 ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ullage \Ul"lage\ (?; 48), n. [OF. eullage, ovillage, the filling up of a cask, fr. ouillier, oillier, euillier, to fill a wine cask; properly, to add oil to prevent evaporation, as to a flask that is nearly full, fr. OF. oile oil. See Oil .] (Com.) The ...