Definitions
1.NounIn a wine bottle, the empty space between the cork and the top of the wine.
2.NounIn 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.NounThe topping up of such a barrel with fresh wine.
4.NounIn an industrial setting, the empty space in a tank, especially as for fuel.
5.NounAdditional cargo of little or no value taken on to prevent movement or shifting of the purposive cargo.
6.NounLeftover wine surreptitiously drunk by waiters as they clear away the glasses.
7.VerbTo gauge the amount of empty space between the top of a cask and the level of liquid inside it.