Answer: ullages

AnswerCrossword Clue
ULLAGESShortages in containers
ULLAGESContainers' fall-short amounts
ullagesthe volume of a loaded tank of liquid propellant in excess of the volume of the propellant; the space provided for thermal expansion of the propellant and the accumulation of gases evolved from it
ullagesthe amount by which the contents fall short of filling a container, as a cask or bottle
ullagesthe quantity of wine, liquor, or the like, remaining in a container that has lost part of its contents by evaporation, leakage, or use