Amount of liquid lost in shipping

• Liquid amount lost in storage
• Unfilled part of a wine container
• Amount lacking to make a full cask
• The amount that a container (as a wine bottle or tank) lacks of being full
• Amount needed to fill a cask

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

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"amount by which a cask or bottle falls short of being full," late 15c., from Anglo-French ulliage (early 14c.), Anglo-Latin oliagium (late 13c.), Old French ouillage , from ouiller "to fill up (a barrel) to the bung," literally "to fill to the eye," from ...

Wikipedia Word definitions in Wikipedia
Ullage or headspace is the unfilled space in a container, particularly with a liquid.